We're going to solve 1839 multiplied by 1978
1839 × 1978 = 1978 × (1839)
+ 1978 × 9 that is equal 17802
+ 1978 × 30 producing 59340
+ 1978 × 800 which equals 1582400
+ 1978 × 1000 giving us 1978000

= 3637542
