Alright, let's work through 3770 times 5644 step by step
3770 × 5644 = 5644 × (3770)
+ 5644 × 0 that is equal 0
+ 5644 × 70 that is equal 395080
+ 5644 × 700 yielding 3950800
+ 5644 × 3000 that equals 16932000

= 21277880
