Let's calculate 4122 x 8240
4122 × 8240 = 8240 × (4122)
+ 8240 × 2 resulting in 16480
+ 8240 × 20 what gives us 164800
+ 8240 × 100 producing 824000
+ 8240 × 4000 that results in 32960000

= 33965280
