200:2*(540 + 460):10=10000
540 + 460=1000
1000:100=100
200:2=100
100*100=10000
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200:2 *540 + 460:10=54046
200:2=100
100*540=54000
460:10=46
54000+46=54046
-----------------------------------------
200:2*(540+460:10)=58600
540+460:10=586
200:2=100
586*100=58600
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1200-200:40*5*5=1075
200:40=5
5*5*5=125
1200-125=1075
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1200-200:(40*5)*5=1195
40*5=200
200:200=1
1*5=5
1200-5=1195
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(1200-200:40)*5*5=29875
200:40=5
1200-5=1195
5*5=25
1195*25=29875
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