Alright, let's work through 6440010 times 7165635 step by step
6440010 × 7165635 = 7165635 × (6440010)
+ 7165635 × 0 yielding 0
+ 7165635 × 10 that equals 71656350
+ 7165635 × 000 that is equal 0
+ 7165635 × 0000 that equals 0
+ 7165635 × 40000 that equals 286625400000
+ 7165635 × 400000 yielding 2866254000000
+ 7165635 × 6000000 which equals 42993810000000

= 46146761056350
