Alright, let's work through 75407032 times 10139916 step by step
75407032 × 10139916 = 10139916 × (75407032)
+ 10139916 × 2 yielding 20279832
+ 10139916 × 30 that results in 304197480
+ 10139916 × 000 that equals 0
+ 10139916 × 7000 yielding 70979412000
+ 10139916 × 00000 that equals 0
+ 10139916 × 400000 giving us 4055966400000
+ 10139916 × 5000000 yielding 50699580000000
+ 10139916 × 70000000 what gives us 709794120000000

= 764620970289312
