Alright, let's work through 27991131 times 43467743 step by step
27991131 × 43467743 = 43467743 × (27991131)
+ 43467743 × 1 that is equal 43467743
+ 43467743 × 30 which equals 1304032290
+ 43467743 × 100 producing 4346774300
+ 43467743 × 1000 resulting in 43467743000
+ 43467743 × 90000 which equals 3912096870000
+ 43467743 × 900000 what gives us 39120968700000
+ 43467743 × 7000000 resulting in 304274201000000
+ 43467743 × 20000000 that is equal 869354860000000

= 1216711288587333
