No problem, we've got 7640 and 8181 to multiply
7640 × 8181 = 8181 × (7640)
+ 8181 × 0 producing 0
+ 8181 × 40 yielding 327240
+ 8181 × 600 what gives us 4908600
+ 8181 × 7000 that equals 57267000

= 62502840
