Alright, let's work through 1236 times 2190 step by step
1236 × 2190 = 2190 × (1236)
+ 2190 × 6 what gives us 13140
+ 2190 × 30 that equals 65700
+ 2190 × 200 that is equal 438000
+ 2190 × 1000 that results in 2190000

= 2706840
