No problem, we've got 4540 and 7820 to multiply
4540 × 7820 = 7820 × (4540)
+ 7820 × 0 producing 0
+ 7820 × 40 which equals 312800
+ 7820 × 500 resulting in 3910000
+ 7820 × 4000 giving us 31280000

= 35502800
