No problem, we've got 8240 and 7985 to multiply
8240 × 7985 = 7985 × (8240)
+ 7985 × 0 that is equal 0
+ 7985 × 40 that equals 319400
+ 7985 × 200 that is equal 1597000
+ 7985 × 8000 that is equal 63880000

= 65796400
