Alright, let's work through 49507812 times 81147463 step by step
49507812 × 81147463 = 81147463 × (49507812)
+ 81147463 × 2 that results in 162294926
+ 81147463 × 10 giving us 811474630
+ 81147463 × 800 resulting in 64917970400
+ 81147463 × 7000 resulting in 568032241000
+ 81147463 × 00000 yielding 0
+ 81147463 × 500000 which equals 40573731500000
+ 81147463 × 9000000 that results in 730327167000000
+ 81147463 × 40000000 yielding 3245898520000000

= 4017433342480956
