What is 3 b m s h t r mean it is for a math equation each letter represents a word?

i think it means that each letter represents a number, and because in maths using letters, you don't need to use the x sign so in simple terms it would mean

3 x b x m x s x h x t x r

(x=times symbol)

so, say b=1

m=2

s=3

h=4

t=5

r=6

then. 3x1x2x3x4x5x6 = 90

and that's what i think it means./

XxX hope it helps