Alright, let's work through 4890928 times 75493989 step by step
4890928 × 75493989 = 75493989 × (4890928)
+ 75493989 × 8 resulting in 603951912
+ 75493989 × 20 resulting in 1509879780
+ 75493989 × 900 giving us 67944590100
+ 75493989 × 0000 that equals 0
+ 75493989 × 90000 producing 6794459010000
+ 75493989 × 800000 resulting in 60395191200000
+ 75493989 × 4000000 that is equal 301975956000000

= 369235664631792
