Alright, let's work through 5311 times 3941 step by step
5311 × 3941 = 3941 × (5311)
+ 3941 × 1 resulting in 3941
+ 3941 × 10 what gives us 39410
+ 3941 × 300 giving us 1182300
+ 3941 × 5000 which equals 19705000

= 20930651
