No problem, we've got 7500 and 4021 to multiply
7500 × 4021 = 4021 × (7500)
+ 4021 × 0 what gives us 0
+ 4021 × 00 that results in 0
+ 4021 × 500 producing 2010500
+ 4021 × 7000 resulting in 28147000

= 30157500
