How to calculate 5 / 28 / 25 / 40
5 of 1-8 / 25 of 28-3 of 40
=1-5/8×28/25-3/40
=1-(28/40+3/40)
=1-31/40
=9/40
Simple calculation of 1994.4 × 3.6 + 2006.9 × 6.4
=1994.4X(3.6+6.4)+(2006.9-1994.4)X6.4
=1994.4X10+12.5X6.4
=19944+12.5X8X0.8
=19944+100X0.8
=19944+80
=20024
Simple calculation of 9.6 * 3.6 + 7.2 * 02
It's 0.2, right?
3.6*(9.6+2*0.2)
=3.6*10
=36