No problem, we've got 7828 and 5140 to multiply
7828 × 5140 = 5140 × (7828)
+ 5140 × 8 that results in 41120
+ 5140 × 20 giving us 102800
+ 5140 × 800 that equals 4112000
+ 5140 × 7000 producing 35980000

= 40235920
