Alright, let's work through 90430944 times 71336939 step by step
90430944 × 71336939 = 71336939 × (90430944)
+ 71336939 × 4 that equals 285347756
+ 71336939 × 40 giving us 2853477560
+ 71336939 × 900 producing 64203245100
+ 71336939 × 0000 that results in 0
+ 71336939 × 30000 that equals 2140108170000
+ 71336939 × 400000 resulting in 28534775600000
+ 71336939 × 0000000 resulting in 0
+ 71336939 × 90000000 what gives us 6420324510000000

= 6451066735840416
