SETVAR i=0
SETVAR sum=0
SETVAR max=100

LOOP COND %i% <= %max% ? REPEATS 1 SETVARO m1 = set /a %i% % 3| SETVARO m2 = set /a %i% % 5|^

COND %m1% == 0, %m2% == 0 ? SETVARO sum = set /a %sum% + %i% |^
COND %m1% != 0 + %m2% != 0 ? DISPMSG %i% not a multiple! %i% % 3 = %m1%, %i% % 5 = %m2% |^
COND %m1% == 0, %m2% == 0 ? DISPMSG %i% is multiple! %i% % 3 = %m1%, %i% % 5 = %m2% |^

SETVARO i = set /a %i% + 1 ^

&& CONTINUE

REM SHELL echo %DURATION_FROM_START% >> @@data\sum.txt
DISPMSG Sum is %sum%
DISPMSG %DURATION_FROM_START%
WAITINPUT