Tell me about it!!! I began writing Fortran programs on a IBM 1620 computer, which had all of 16k words = 32k Bytes memory to work with and of course punch cards only! One of my Engineering calculations and design program at Link-Belt Company required breaking it up into 25 segments to work with the 16k memory. The program to run was loaded as a huge deck of punched cards, followed by data cards for the specific job. The computer punched out cards with results from Segment #1. Then the segment #2 program was loaded as another huge deck of cards, followed by cards punched out by segment #1 program.... Repeating process 25 times yielded final results which were printed out. Took about 2 hours to run the job! So when disk drives came out (they were 15" diameter) it was huge progress... and you know the rest of story.
and you know the rest of story..
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I do indeed. Fortran on punch cards was in wide use by several members of my department. Since I had zero experience writing code I opted to go time share and BASIC on punched tape. It was well understood at the time that the Fortran guys were the real Programmers and the BASIC users were something less, much less.
But on the other hand I used that old system to develop programs that would iterate through possible solutions and select the best. It worked and we designed and built microwave amplifiers that matched the computer results. Those were the days.