No problem, we've got 7122 and 5636 to multiply
7122 × 5636 = 5636 × (7122)
+ 5636 × 2 that equals 11272
+ 5636 × 20 yielding 112720
+ 5636 × 100 what gives us 563600
+ 5636 × 7000 resulting in 39452000

= 40139592
