Alright, let's work through 16659975 times 49057571 step by step
16659975 × 49057571 = 49057571 × (16659975)
+ 49057571 × 5 yielding 245287855
+ 49057571 × 70 that results in 3434029970
+ 49057571 × 900 yielding 44151813900
+ 49057571 × 9000 yielding 441518139000
+ 49057571 × 50000 yielding 2452878550000
+ 49057571 × 600000 that results in 29434542600000
+ 49057571 × 6000000 that results in 294345426000000
+ 49057571 × 10000000 giving us 490575710000000

= 817297906420725
