Alright, let's work through 64905093 times 96781409 step by step
64905093 × 96781409 = 96781409 × (64905093)
+ 96781409 × 3 yielding 290344227
+ 96781409 × 90 that results in 8710326810
+ 96781409 × 000 what gives us 0
+ 96781409 × 5000 giving us 483907045000
+ 96781409 × 00000 giving us 0
+ 96781409 × 900000 that is equal 87103268100000
+ 96781409 × 4000000 that is equal 387125636000000
+ 96781409 × 60000000 resulting in 5806884540000000

= 6281606351816037
