No problem, we've got 10000 and 4542 to multiply
10000 × 4542 = 4542 × (10000)
+ 4542 × 0 that equals 0
+ 4542 × 00 giving us 0
+ 4542 × 000 what gives us 0
+ 4542 × 0000 which equals 0
+ 4542 × 10000 that results in 45420000

= 45420000
