Alright, let's work through 3156 times 5915 step by step
3156 × 5915 = 5915 × (3156)
+ 5915 × 6 giving us 35490
+ 5915 × 50 which equals 295750
+ 5915 × 100 that is equal 591500
+ 5915 × 3000 which equals 17745000

= 18667740
