No problem, we've got 2157 and 3153 to multiply
2157 × 3153 = 3153 × (2157)
+ 3153 × 7 producing 22071
+ 3153 × 50 that equals 157650
+ 3153 × 100 what gives us 315300
+ 3153 × 2000 that results in 6306000

= 6801021
