Alright, let's work through 10645305 times 64813230 step by step
10645305 × 64813230 = 64813230 × (10645305)
+ 64813230 × 5 yielding 324066150
+ 64813230 × 00 giving us 0
+ 64813230 × 300 that equals 19443969000
+ 64813230 × 5000 that is equal 324066150000
+ 64813230 × 40000 producing 2592529200000
+ 64813230 × 600000 that equals 38887938000000
+ 64813230 × 0000000 that is equal 0
+ 64813230 × 10000000 producing 648132300000000

= 689956601385150
