No problem, we've got 6521 and 1220 to multiply
6521 × 1220 = 1220 × (6521)
+ 1220 × 1 that results in 1220
+ 1220 × 20 giving us 24400
+ 1220 × 500 that is equal 610000
+ 1220 × 6000 resulting in 7320000

= 7955620
