How do you write 4,000,000,000 + 20,000,000 + 500,000 + 60,000 + 1,000 + 300 + 40

Answer 1

4,020,561,340

add
0*10^0
4*10^1
3*10^2
1*10^3
6*10^4
5*10^5
0*10^6
2*10^7
0*10^8
4*10^9 :)