Alright, let's work through 2172107 times 55508191 step by step
2172107 × 55508191 = 55508191 × (2172107)
+ 55508191 × 7 producing 388557337
+ 55508191 × 00 that is equal 0
+ 55508191 × 100 producing 5550819100
+ 55508191 × 2000 resulting in 111016382000
+ 55508191 × 70000 yielding 3885573370000
+ 55508191 × 100000 which equals 5550819100000
+ 55508191 × 2000000 that equals 111016382000000

= 120569730228437
