Alright, let's work through 90202984 times 54256971 step by step
90202984 × 54256971 = 54256971 × (90202984)
+ 54256971 × 4 that equals 217027884
+ 54256971 × 80 that results in 4340557680
+ 54256971 × 900 which equals 48831273900
+ 54256971 × 2000 giving us 108513942000
+ 54256971 × 00000 giving us 0
+ 54256971 × 200000 what gives us 10851394200000
+ 54256971 × 0000000 giving us 0
+ 54256971 × 90000000 what gives us 4883127390000000

= 4894140687001464
