Alright, let's work through 64174986 times 71930931 step by step
64174986 × 71930931 = 71930931 × (64174986)
+ 71930931 × 6 that results in 431585586
+ 71930931 × 80 resulting in 5754474480
+ 71930931 × 900 yielding 64737837900
+ 71930931 × 4000 producing 287723724000
+ 71930931 × 70000 producing 5035165170000
+ 71930931 × 100000 that results in 7193093100000
+ 71930931 × 4000000 giving us 287723724000000
+ 71930931 × 60000000 that equals 4315855860000000

= 4616166489891966
