No problem, we've got 7451 and 8900 to multiply
7451 × 8900 = 8900 × (7451)
+ 8900 × 1 what gives us 8900
+ 8900 × 50 that equals 445000
+ 8900 × 400 yielding 3560000
+ 8900 × 7000 giving us 62300000

= 66313900
