Alright, let's work through 89992988 times 74691125 step by step
89992988 × 74691125 = 74691125 × (89992988)
+ 74691125 × 8 what gives us 597529000
+ 74691125 × 80 giving us 5975290000
+ 74691125 × 900 yielding 67222012500
+ 74691125 × 2000 giving us 149382250000
+ 74691125 × 90000 giving us 6722201250000
+ 74691125 × 900000 which equals 67222012500000
+ 74691125 × 9000000 producing 672220125000000
+ 74691125 × 80000000 that is equal 5975290000000000

= 6721677515831500
