1998 is a bit late, but in the 1970s people commonly did this professionally as a fallback/verification for these newfabngled machines (and of course also there

1998 is a bit late, but in the 1970s people commonly did this professionally as a fallback/verification for these newfabngled machines (and of course also there were similar jobs as the primary source of results in the age before machines). Those people's job roles were called "computer", before the machines took over the name.