37+1=30+7+1=38
52+7=50+2+7=59
48+1=40+8+1=49
55+4=50+5=4=59
24+5=20+4+5=29
56+3=50+6+3=59
63+6=60+3+6=69
1)-2.9:25=-0,116
2)-0,116+0.26=0.144
3)0.144*100=14.4