Alright, let's work through 90361973 times 72415248 step by step
90361973 × 72415248 = 72415248 × (90361973)
+ 72415248 × 3 that is equal 217245744
+ 72415248 × 70 producing 5069067360
+ 72415248 × 900 that equals 65173723200
+ 72415248 × 1000 that is equal 72415248000
+ 72415248 × 60000 what gives us 4344914880000
+ 72415248 × 300000 producing 21724574400000
+ 72415248 × 0000000 that results in 0
+ 72415248 × 90000000 what gives us 6517372320000000

= 6543584684564304
