No problem, we've got 7904 and 6900 to multiply
7904 × 6900 = 6900 × (7904)
+ 6900 × 4 that equals 27600
+ 6900 × 00 yielding 0
+ 6900 × 900 producing 6210000
+ 6900 × 7000 that equals 48300000

= 54537600
