Alright, let's work through 90904836 times 72047490 step by step
90904836 × 72047490 = 72047490 × (90904836)
+ 72047490 × 6 which equals 432284940
+ 72047490 × 30 that equals 2161424700
+ 72047490 × 800 that equals 57637992000
+ 72047490 × 4000 that is equal 288189960000
+ 72047490 × 00000 resulting in 0
+ 72047490 × 900000 yielding 64842741000000
+ 72047490 × 0000000 giving us 0
+ 72047490 × 90000000 that is equal 6484274100000000

= 6549465262661640
