Alright, let's work through 91136972 times 18092045 step by step
91136972 × 18092045 = 18092045 × (91136972)
+ 18092045 × 2 what gives us 36184090
+ 18092045 × 70 yielding 1266443150
+ 18092045 × 900 which equals 16282840500
+ 18092045 × 6000 giving us 108552270000
+ 18092045 × 30000 giving us 542761350000
+ 18092045 × 100000 yielding 1809204500000
+ 18092045 × 1000000 yielding 18092045000000
+ 18092045 × 90000000 that results in 1628284050000000

= 1648854198587740
