Alright, let's work through 64486354 times 88964788 step by step
64486354 × 88964788 = 88964788 × (64486354)
+ 88964788 × 4 that results in 355859152
+ 88964788 × 50 which equals 4448239400
+ 88964788 × 300 giving us 26689436400
+ 88964788 × 6000 yielding 533788728000
+ 88964788 × 80000 yielding 7117183040000
+ 88964788 × 400000 that equals 35585915200000
+ 88964788 × 4000000 that is equal 355859152000000
+ 88964788 × 60000000 what gives us 5337887280000000

= 5737014812502952
