(c+d)*407
c=670 d=31
(670 + 31) × 407 = 285307
670 + 31 = 701
701 × 407 = 285307
c=258 d=902
(258 + 902) × 407 = 472120
258 + 902 = 1160
1160 × 407 = 472120
m:(706-k)
m=5096 k=69
5096 / (706 − 69) = 8
706 − 69 = 637
5096 / 637 = 8
m=6370 k=615
6370 / (706 − 615) = 70
706 − 615 = 91
6370 / 91 = 70