For the first one …

600,000,000,000,000 + 50,000,000,000,000 + 7,000,000,000,000 + 900,000,000,000 + 70,000,000,000 etc.

Use the same method for the second one, except that you have to think in decimals. You seem to have put two decimal points in the second number so I am not sure which one is the correct one. If the first one is the correct one, it would be:

0.004000000000 + 0.000900000000 + 0.000080000000 etc.

6.57 x 10 ^ 2

9.78636545232 x 10 ^ 11

4.98 x 10 ^ -3

1.23 x 10 ^ -4

9.78636545232 x 10^11

4.98 x 10^-3

1.23 x 10^-4

go to this page and READ it. You will understand and be able to do it. Ok?