We're going to solve 1931 multiplied by 3129
1931 × 3129 = 3129 × (1931)
+ 3129 × 1 giving us 3129
+ 3129 × 30 yielding 93870
+ 3129 × 900 resulting in 2816100
+ 3129 × 1000 that equals 3129000

= 6042099
