Alright, let's work through 63172448 times 21460339 step by step
63172448 × 21460339 = 21460339 × (63172448)
+ 21460339 × 8 that results in 171682712
+ 21460339 × 40 that is equal 858413560
+ 21460339 × 400 what gives us 8584135600
+ 21460339 × 2000 what gives us 42920678000
+ 21460339 × 70000 that is equal 1502223730000
+ 21460339 × 100000 yielding 2146033900000
+ 21460339 × 3000000 producing 64381017000000
+ 21460339 × 60000000 resulting in 1287620340000000

= 1355702149539872
