REM Rosetta Code problem: https://rosettacode.org/wiki/Leap_year
REM by Jjuanhdez, 06/2022

10 REM Leap year
20 LET Y = 1750
30 IF Y = 2021 THEN GOTO 80
40 GOSUB 100
50 IF L = 1 THEN PRINT Y
60 LET Y = Y + 1
70 GOTO 30
80 END
100 LET L = 0
110 IF (Y - (Y / 4) * 4) <> 0 THEN RETURN
120 IF (Y - (Y / 100) * 100) = 0 THEN GOTO 140
130 LET L = 1
140 IF (Y - (Y / 400) * 400) <> 0 THEN GOTO 160
150 LET L = 1
160 RETURN