What is 1000000000000000000000000000000000000000000000000000000000000000000000000 plus 10000000000000000000000000000000000000?

The sum of 1 followed by 84 zeros (1 followed by 84 zeros) and 1 followed by 37 zeros (10,000,000,000,000,000,000,000) is 1 followed by 84 zeros and a 1 followed by 37 zeros. In scientific notation, this can be expressed as (1.000000000000000000000000000000000000000000000000000000000000000000000000000001 \times 10^{84}) or simply as (1.00000000000000000000000000000000000001 \times 10^{84}). The larger number dominates, so the result is essentially (1 \times 10^{84}).