Alright, let's work through 5331 times 3759 step by step
5331 × 3759 = 3759 × (5331)
+ 3759 × 1 what gives us 3759
+ 3759 × 30 resulting in 112770
+ 3759 × 300 producing 1127700
+ 3759 × 5000 that results in 18795000

= 20039229
