Alright, let's work through 64116727 times 77241040 step by step
64116727 × 77241040 = 77241040 × (64116727)
+ 77241040 × 7 resulting in 540687280
+ 77241040 × 20 which equals 1544820800
+ 77241040 × 700 yielding 54068728000
+ 77241040 × 6000 that results in 463446240000
+ 77241040 × 10000 that is equal 772410400000
+ 77241040 × 100000 what gives us 7724104000000
+ 77241040 × 4000000 which equals 308964160000000
+ 77241040 × 60000000 that equals 4634462400000000

= 4952442674876080
