Alright, let's work through 1931 times 1231 step by step
1931 × 1231 = 1231 × (1931)
+ 1231 × 1 giving us 1231
+ 1231 × 30 that results in 36930
+ 1231 × 900 which equals 1107900
+ 1231 × 1000 that is equal 1231000

= 2377061
