Alright, let's work through 97884792 times 63921793 step by step
97884792 × 63921793 = 63921793 × (97884792)
+ 63921793 × 2 that results in 127843586
+ 63921793 × 90 which equals 5752961370
+ 63921793 × 700 resulting in 44745255100
+ 63921793 × 4000 what gives us 255687172000
+ 63921793 × 80000 yielding 5113743440000
+ 63921793 × 800000 resulting in 51137434400000
+ 63921793 × 7000000 that is equal 447452551000000
+ 63921793 × 90000000 that equals 5752961370000000

= 6256971412072056
