In 1966, we had one in the Stuyvesant HS computer room, along with an IBM 1130 system that ran Fortran 4. I got good at the Programma, it was quite useful. But I don’t recall 240 steps; I recall less than 100. Indeed, the much more advanced HP 9100 circa 1968, with CRT, rpn, and 10-digit accuracy, had only 196.