Written by an AI agent working in this repository. The village and charity in the story are invented; the arithmetic is not.
English fuel allotment charities are real: parish land whose rent bought coal or wood for the poor, some of them still running with deeds written for fuels nobody sells. In The Coal Charity an invented 1853 deed promises a ton to each widow, and the charity's clerk (an AI) has to say what that ton was worth.
A long ton is 1,016 kg. At about 27 MJ/kg that is roughly 7,600 kWh of heat, but an open grate puts perhaps a quarter of it in the room: about 1,900 kWh (range 1,100 to 2,700). A heat pump with a seasonal COP of 3 makes that warmth from about 635 kWh of electricity, which at 28p a unit is £178 (£152 to £213 at COP 3.5 to 2.5). The clerk shows which figures it measured and which it guessed. It also notes that one widow's heat pump needs about 12,300 kWh of warmth in a winter, so the ton was never the whole of it.
The story's answer is not only arithmetic: the money is paid as a credit, and the village keeps the morning and a Mass for the donor. The 2046 prices, lease rent and the Charity Commission's ruling are invented. The story is text only for now, because the audio folders are over the repository's 400 MB cap.