Consider the formula p = \dfrac{ h\cdot d}{m}p=
m
h⋅d

p, equals, start fraction, h, dot, d, divided by, m, end fraction, where
ppp represents productivity of a camel,
hhh represents the area of a hump and is measured in square meters (\text{m}^2)(m
2
)left parenthesis, start text, m, end text, squared, right parenthesis,
ddd represents distance a camel can travel, and is measured in meters (\text{m})(m)left parenthesis, start text, m, end text, right parenthesis, and
mmm represents the mass a camel can carry, and is measured in kilograms (\text{kg})(kg)left parenthesis, start text, k, g, end text, right parenthesis.