700000+60000+3000+700+10+3 =763713
All the operations are addition. This means all the adding can happen in the same step.
7.0 × 1052.0 × 1043.0 × 103
2000000 + 100000 + 60000 + 3000
20
3,403
3,000,200,406
7.0 × 1052.0 × 1043.0 × 103
300000000 + 10000000 + 700000 + 60000 + 3000 + 100 + 30 + 6
2000000 + 100000 + 60000 + 3000
20
3,403
903,600
3000
3810
3,000,200,406
713923
3000 + 20 = 3020 Standard form just implies you write out the number numerically (as in 3020 and not three-thousand and twenty. So the answer is just 3020.
Assuming those were added, the standard form is: 2,070,173,810