Alright, let's work through 1381 times 8031 step by step
1381 × 8031 = 8031 × (1381)
+ 8031 × 1 resulting in 8031
+ 8031 × 80 that equals 642480
+ 8031 × 300 that equals 2409300
+ 8031 × 1000 giving us 8031000

= 11090811
