We're going to solve 3157 multiplied by 6270
3157 × 6270 = 6270 × (3157)
+ 6270 × 7 which equals 43890
+ 6270 × 50 that equals 313500
+ 6270 × 100 producing 627000
+ 6270 × 3000 yielding 18810000

= 19794390
