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Simple calculation: 57 times 1.38 + 13.8 times 4.3 and three fifths times 4.2-1.2 divided by five thirds

Simple calculation: 57 times 1.38 + 13.8 times 4.3 and three fifths times 4.2-1.2 divided by five thirds

57 by 1.38 + 13.8 by 4.3
=1.38x(57+43)
=1.38x100
=138
Three fifths multiplied by 4.2-1.2 divided by five thirds
=Three fifths by 4.2-1.2 by three fifths
=3/5x(4.2-1.2)
=3/5x3
=9/5
=1.8

Simple calculation of 32 times 25 times 5!

Simple calculation of 0.25 times 32

0.25*32
=0.25*4*8
=1*8
=8

What is the simple operation of 0.32 times 25 times 12.5

0.32*25*12.5
=0.4*25*0.8*12.5
=10*10
=100