Question

12435+654012
123698-789461
963*869
555/5

Answer 1

$12435 + 654012 = 666447 \\ 123698 - 789461 = - 665763 \\ 963 \times 869 = 836847 \\ \frac{555}{5} = 111$

Answer 2

666447
-665763
836847
111