Classicly

And All the Earth a Grave is a science fiction short story written by Carroll Mather Capps, an American science fiction author. He was also a long-time benefactor of San Francisco chess.

Excerpts:

It all began when the new bookkeeping machine of a large Midwestern coffin manufacturer slipped a cog, or blew a transistor, or something. It was fantastic that the error—one of two decimal places—should enjoy a straight run of okays, human and mechanical, clear down the line; but when the figures clacked out at the last clacking-out station, there it was. The figures were now sacred; immutable; and it is doubtful whether the President of the concern or the Chairman of the Board would have dared question them—even if either of those two gentlemen had been in town.