No problem, we've got 5625 and 7776 to multiply
5625 × 7776 = 7776 × (5625)
+ 7776 × 5 that equals 38880
+ 7776 × 20 that equals 155520
+ 7776 × 600 giving us 4665600
+ 7776 × 5000 producing 38880000

= 43740000
