Alright, let's work through 42125368 times 21842154 step by step
42125368 × 21842154 = 21842154 × (42125368)
+ 21842154 × 8 resulting in 174737232
+ 21842154 × 60 yielding 1310529240
+ 21842154 × 300 yielding 6552646200
+ 21842154 × 5000 that results in 109210770000
+ 21842154 × 20000 giving us 436843080000
+ 21842154 × 100000 which equals 2184215400000
+ 21842154 × 2000000 producing 43684308000000
+ 21842154 × 40000000 what gives us 873686160000000

= 920108775162672
