Alright, let's work through 64512137 times 18705416 step by step
64512137 × 18705416 = 18705416 × (64512137)
+ 18705416 × 7 resulting in 130937912
+ 18705416 × 30 that is equal 561162480
+ 18705416 × 100 that equals 1870541600
+ 18705416 × 2000 what gives us 37410832000
+ 18705416 × 10000 which equals 187054160000
+ 18705416 × 500000 yielding 9352708000000
+ 18705416 × 4000000 that results in 74821664000000
+ 18705416 × 60000000 which equals 1122324960000000

= 1206726359633992
