No problem, we've got 7780 and 3930 to multiply
7780 × 3930 = 3930 × (7780)
+ 3930 × 0 resulting in 0
+ 3930 × 80 yielding 314400
+ 3930 × 700 that equals 2751000
+ 3930 × 7000 that results in 27510000

= 30575400
