Alright, let's work through 78698745 times 86727735 step by step
78698745 × 86727735 = 86727735 × (78698745)
+ 86727735 × 5 that is equal 433638675
+ 86727735 × 40 giving us 3469109400
+ 86727735 × 700 yielding 60709414500
+ 86727735 × 8000 which equals 693821880000
+ 86727735 × 90000 which equals 7805496150000
+ 86727735 × 600000 that equals 52036641000000
+ 86727735 × 8000000 producing 693821880000000
+ 86727735 × 70000000 that results in 6070941450000000

= 6825363901192575
