Alright, let's work through 2587 times 5300 step by step
2587 × 5300 = 5300 × (2587)
+ 5300 × 7 that results in 37100
+ 5300 × 80 that results in 424000
+ 5300 × 500 what gives us 2650000
+ 5300 × 2000 what gives us 10600000

= 13711100
