Alright, let's work through 5297555 times 90719444 step by step
5297555 × 90719444 = 90719444 × (5297555)
+ 90719444 × 5 resulting in 453597220
+ 90719444 × 50 which equals 4535972200
+ 90719444 × 500 producing 45359722000
+ 90719444 × 7000 yielding 635036108000
+ 90719444 × 90000 that results in 8164749960000
+ 90719444 × 200000 giving us 18143888800000
+ 90719444 × 5000000 yielding 453597220000000

= 480591244159420
