Alright, let's work through 5087 times 2138 step by step
5087 × 2138 = 2138 × (5087)
+ 2138 × 7 that results in 14966
+ 2138 × 80 which equals 171040
+ 2138 × 000 that is equal 0
+ 2138 × 5000 that results in 10690000

= 10876006
