Alright, let's work through 43023786 times 91693831 step by step
43023786 × 91693831 = 91693831 × (43023786)
+ 91693831 × 6 yielding 550162986
+ 91693831 × 80 that results in 7335506480
+ 91693831 × 700 producing 64185681700
+ 91693831 × 3000 that is equal 275081493000
+ 91693831 × 20000 giving us 1833876620000
+ 91693831 × 000000 that equals 0
+ 91693831 × 3000000 resulting in 275081493000000
+ 91693831 × 40000000 that results in 3667753240000000

= 3945015762464166
