per day

See: per diem
References in classic literature ?
Sun Tzu said: In the operations of war, where there are in the field a thousand swift chariots, as many heavy chariots, and a hundred thousand mail-clad soldiers, with provisions enough to carry them a thousand li, the expenditure at home and at the front, including entertainment of guests, small items such as glue and paint, and sums spent on chariots and armor, will reach the total of a thousand ounces of silver per day.
A single plant of this species will give eight or ten quarts of milk per day.
The quantity was gradually and regularly increased, according to the needs and capacities of the patient, until by and by you would find him disposing of his one grape per second all the day long, and his regular barrel per day.
Five dollars per day, in gold, it is believed, will be a fair calculation to make for all traveling expenses onshore and at the various points where passengers may wish to leave the steamer for days at a time.
I offer you a hundred pounds per day, and an additional reward of two hundred pounds if I reach Yokohama in time.
Many months after the re-establishment of peace and order, and even when it had ceased to be the town-talk, that every military officer, kept at free quarters by the City during the late alarms, had cost for his board and lodging four pounds four per day, and every private soldier two and twopence halfpenny; many months after even this engrossing topic was forgotten, and the United Bulldogs were to a man all killed, imprisoned, or transported, Mr Simon Tappertit, being removed from a hospital to prison, and thence to his place of trial, was discharged by proclamation, on two wooden legs.
My work pleased the captain so well that he told me if I desired I could continue working for a small amount per day.
If you take a nation of 60,000,000, where average wages are $2 per day, three days' wages taken from each individual will provide $360,000,000 and pay the government's expenses.
He received thirty sous per day, and for a month he returned to his lodgings gay as a chaffinch, and affable toward his master.
The prudent Mrs Chivery, who wondered greatly at this change, would have protested against it as detrimental to the Highland typification on the doorpost but for two forcible reasons; one, that her John was roused to take strong interest in the business which these starts were supposed to advance--and this she held to be good for his drooping spirits; the other, that Mr Pancks confidentially agreed to pay her, for the occupation of her son's time, at the handsome rate of seven and sixpence per day.
So, fifty francs per day for a prince of the blood, thirty-six for a marechal of France "
When we came on shore, the old pilot, who was now our friend, got us a lodging, together with a warehouse for our goods; it was a little hut, with a larger house adjoining to it, built and also palisadoed round with canes, to keep out pilferers, of which there were not a few in that country: however, the magistrates allowed us a little guard, and we had a soldier with a kind of half-pike, who stood sentinel at our door, to whom we allowed a pint of rice and a piece of money about the value of three-pence per day, so that our goods were kept very safe.