Alright, let's work through 90300293 times 45704127 step by step
90300293 × 45704127 = 45704127 × (90300293)
+ 45704127 × 3 that results in 137112381
+ 45704127 × 90 producing 4113371430
+ 45704127 × 200 yielding 9140825400
+ 45704127 × 0000 resulting in 0
+ 45704127 × 00000 giving us 0
+ 45704127 × 300000 giving us 13711238100000
+ 45704127 × 0000000 what gives us 0
+ 45704127 × 90000000 what gives us 4113371430000000

= 4127096059409211
