Answer :

st ÷ 6r
(32)(45) ÷ 6(5)
1440 ÷ 30
48

Answer: The answer is 48.

Step-by-step explanation:  The given expression is

[tex]E=st\div6r.[/tex]

we are given to solve the above expression is the value of r is 5, the value of s is 32 and the value of t is 45.

The solution is as follows:

[tex]E\\\\=st\div6t\\\\=\dfrac{st}{6r}\\\\=\dfrac{32\times 45}{6\times 5}\\\\=16\times 3\\\\=48.[/tex]

Thus, the required value is 48.