1)85.6*(20.2-18.51)+13.136=
1. 20.2 - 18.51=1.69
2. 85.6 * 1.69=144.669
3. 144.669+13.136=157.8
2) 1. 11.12+32.68=43.8
2. 43.8 * 17.9=784.02
3. 784.02 - 95.02= 689