Alright, let's work through 19747820 times 97944164 step by step
19747820 × 97944164 = 97944164 × (19747820)
+ 97944164 × 0 which equals 0
+ 97944164 × 20 that results in 1958883280
+ 97944164 × 800 yielding 78355331200
+ 97944164 × 7000 what gives us 685609148000
+ 97944164 × 40000 that equals 3917766560000
+ 97944164 × 700000 giving us 68560914800000
+ 97944164 × 9000000 giving us 881497476000000
+ 97944164 × 10000000 yielding 979441640000000

= 1934183720722480
