No problem, we've got 8363 and 8363 to multiply
8363 × 8363 = 8363 × (8363)
+ 8363 × 3 yielding 25089
+ 8363 × 60 producing 501780
+ 8363 × 300 what gives us 2508900
+ 8363 × 8000 which equals 66904000

= 69939769
