5.6 times 69.32 + 138.64 times 0.05 + 693.2 times 0.43

5.6 times 69.32 + 138.64 times 0.05 + 693.2 times 0.43

I can't do such a simple problem
Let me teach you:
5.6X69.32+138.64X0.05+693.2X0.43
=5.6X69.32+69.32X2X0.05+69.32X10X0.43
=5.6X69.32+69.32X0.1+69.32X4.3
=69.32X(5.6+0.1+4.3)
=69.32X10
=693.2

Simple calculation: 32.4-12.4 * 1.8

Since it's a simple method, it's 18 * 1.8 from 32.4, which is a bit difficult
32.4-12.4*1.8=32.4-12.4*（2-0.2）=32.4-12.4*2+12.4*0.2
=32.4-24.8+2.48
=（32.4+2.48）-24.8
=34.88-24.8=10.08

Six out of seven times thirteen minus twelve times six out of seven

7
=- X12 - 6 / 7 X12 + 6 / 7 x1
six
=14-14+1
=0+1
=1