284 x 8
8x4=32
8x8-=640
8x200=1600
1600+640+32=2272
454 x 7
7x4=28
7x50=350
7x400=2800
2800+350+28=3178
736 x 5
6x5=30
5x30=150
5x700=3500
3500+150+30=3680
876 x 5
5x6=30
5x70=350
5x800=4000
4000+350+30=4380
425 x 6
6x5=30
6x20=120
6x400=2400
2400+120+30=2550
542 x 7
7x2=14
7x40=280
7x500=3500
3500+280+14=3794
987 x 4
4x7=28
4x80=320
4x900=3700
3700+320+28=4048
234 x 8
8x4=32
30x8=240
200x8=1600
1600+240+32=1872
354 x 3
3x4=12
3x50=150
3x300=900
900+150+12=1062
592 x 2
2x2=4
2x90=180
2x500=1000
1000+180+4=1184