Alright, let's work through 1871 times 8284 step by step
1871 × 8284 = 8284 × (1871)
+ 8284 × 1 that results in 8284
+ 8284 × 70 producing 579880
+ 8284 × 800 what gives us 6627200
+ 8284 × 1000 what gives us 8284000

= 15499364
