We're going to solve 1398 multiplied by 3135
1398 × 3135 = 3135 × (1398)
+ 3135 × 8 which equals 25080
+ 3135 × 90 that equals 282150
+ 3135 × 300 which equals 940500
+ 3135 × 1000 that is equal 3135000

= 4382730
