180°c=…°r=…°f=…°k

C:R:F
5:4:9
K = C + 273

R = 180/5 x 4 = 36 x 4 = 144
F = 180/5 x 9 (+32) = 36 x 9 + 32 = 324+32 = 356
K = C + 273 = 180 + 273 = 453