No problem, we've got 7820 and 4044 to multiply
7820 × 4044 = 4044 × (7820)
+ 4044 × 0 giving us 0
+ 4044 × 20 producing 80880
+ 4044 × 800 producing 3235200
+ 4044 × 7000 which equals 28308000

= 31624080
