Alright, let's work through 8741 times 1780 step by step
8741 × 1780 = 1780 × (8741)
+ 1780 × 1 that is equal 1780
+ 1780 × 40 that equals 71200
+ 1780 × 700 that is equal 1246000
+ 1780 × 8000 producing 14240000

= 15558980
