1)150036-74946=75090
2)75090:30=2503
3)2503*400=1001200
4)198698+1001200=1199898
=19869+75090:30*400=19869+2503*400=19869+1001200=1199898
1)150036-74946=75090
2)75090:30=2503
3)2503*400=1001200
4)198698+1001200=1199898
=19869+75090:30*400=19869+2503*400=19869+1001200=1199898