Alright, let's work through 5215 times 4159 step by step
5215 × 4159 = 4159 × (5215)
+ 4159 × 5 that equals 20795
+ 4159 × 10 giving us 41590
+ 4159 × 200 that equals 831800
+ 4159 × 5000 what gives us 20795000

= 21689185
