Alright, let's work through 3344 times 5138 step by step
3344 × 5138 = 5138 × (3344)
+ 5138 × 4 what gives us 20552
+ 5138 × 40 which equals 205520
+ 5138 × 300 that is equal 1541400
+ 5138 × 3000 that results in 15414000

= 17181472
