Alright, let's work through 5404 times 2920 step by step
5404 × 2920 = 2920 × (5404)
+ 2920 × 4 resulting in 11680
+ 2920 × 00 that is equal 0
+ 2920 × 400 what gives us 1168000
+ 2920 × 5000 that is equal 14600000

= 15779680
