10 REM Formatted numeric output
20 CLS
30 LET N=7.125
40 LET W=9
50 GOSUB 1000
60 SCREEN 10,9:PRINT N$
70 END
1000 REM Formatted fixed-length
1010 N$=STR$(N):N$=RIGHT$(N$,LEN(N$)-1)
1020 FOR I=1 TO W-LEN(N$)
1030 N$="0"+N$
1040 NEXT I
1050 RETURN