Alright, let's work through 67775527 times 78980961 step by step
67775527 × 78980961 = 78980961 × (67775527)
+ 78980961 × 7 that is equal 552866727
+ 78980961 × 20 giving us 1579619220
+ 78980961 × 500 that results in 39490480500
+ 78980961 × 5000 yielding 394904805000
+ 78980961 × 70000 that is equal 5528667270000
+ 78980961 × 700000 resulting in 55286672700000
+ 78980961 × 7000000 producing 552866727000000
+ 78980961 × 60000000 yielding 4738857660000000

= 5352976254741447
