100+600+300+800=180000

1+123=124

56+78=134

70+78=148

6+9=15

2+1=3

3+4=7

6+7=14

11+11=22

1. 100 + 600 = 700 + 300 = 1000 + 800 = 1800

1. 1 + 123 = 124
2. 56 + 78 = 134
3. 70 + 78 = 148
4. 6 + 9 = 15
5. 2 + 1 = 3
6. 3 + 4 = 7
7. 6 + 7 = 13
8. 11 + 11 = 22

hope it's help you