Alright, let's work through 18249721 times 61276899 step by step
18249721 × 61276899 = 61276899 × (18249721)
+ 61276899 × 1 that equals 61276899
+ 61276899 × 20 that equals 1225537980
+ 61276899 × 700 which equals 42893829300
+ 61276899 × 9000 yielding 551492091000
+ 61276899 × 40000 resulting in 2451075960000
+ 61276899 × 200000 yielding 12255379800000
+ 61276899 × 8000000 producing 490215192000000
+ 61276899 × 10000000 that results in 612768990000000

= 1118286310495179
