Alright, let's work through 1680992 times 74123392 step by step
1680992 × 74123392 = 74123392 × (1680992)
+ 74123392 × 2 yielding 148246784
+ 74123392 × 90 producing 6671105280
+ 74123392 × 900 that equals 66711052800
+ 74123392 × 0000 that results in 0
+ 74123392 × 80000 producing 5929871360000
+ 74123392 × 600000 that is equal 44474035200000
+ 74123392 × 1000000 what gives us 74123392000000

= 124600828964864
