Alright, let's work through 3736 times 1399 step by step
3736 × 1399 = 1399 × (3736)
+ 1399 × 6 that results in 8394
+ 1399 × 30 yielding 41970
+ 1399 × 700 what gives us 979300
+ 1399 × 3000 which equals 4197000

= 5226664
