Alright, let's work through 55642705 times 15357285 step by step
55642705 × 15357285 = 15357285 × (55642705)
+ 15357285 × 5 what gives us 76786425
+ 15357285 × 00 yielding 0
+ 15357285 × 700 producing 10750099500
+ 15357285 × 2000 which equals 30714570000
+ 15357285 × 40000 which equals 614291400000
+ 15357285 × 600000 resulting in 9214371000000
+ 15357285 × 5000000 that is equal 76786425000000
+ 15357285 × 50000000 which equals 767864250000000

= 854520878855925
