Alright, let's work through 1860 times 8980 step by step
1860 × 8980 = 8980 × (1860)
+ 8980 × 0 resulting in 0
+ 8980 × 60 giving us 538800
+ 8980 × 800 that is equal 7184000
+ 8980 × 1000 producing 8980000

= 16702800
