No problem, we've got 5640 and 8102 to multiply
5640 × 8102 = 8102 × (5640)
+ 8102 × 0 that equals 0
+ 8102 × 40 yielding 324080
+ 8102 × 600 that results in 4861200
+ 8102 × 5000 yielding 40510000

= 45695280
