Alright, let's work through 64342751 times 87281217 step by step
64342751 × 87281217 = 87281217 × (64342751)
+ 87281217 × 1 that is equal 87281217
+ 87281217 × 50 producing 4364060850
+ 87281217 × 700 producing 61096851900
+ 87281217 × 2000 what gives us 174562434000
+ 87281217 × 40000 that equals 3491248680000
+ 87281217 × 300000 which equals 26184365100000
+ 87281217 × 4000000 resulting in 349124868000000
+ 87281217 × 60000000 that results in 5236873020000000

= 5615913612407967
