1. 4x236=944
4x200=800
4x30=120
4x6=24
800+120+24=944
2. 5x631=3155
5x600=3000
5x30=150
5x1=5
3000+150+5=3155
3. 2x488=976
2x400=800
2x80=160
2x8=16
800+160+16=976
4. 7x203=1521
7x200=1500
7x3=21
1500+21=1521
5. 4x256=1024
4x200=800
4x50=200
4x6=24
800+200+24=1024
6. 3x812=2436
3x800=2400
3x10=30
3x2=6
2400+30+6=2436
7.6x218=1308
6x200=1200
6x10=60
6x8=48
1200+60+48=1308
8. 7x208=1356
7x200=1300
7x8=56
1300+56=1356
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