What is the purpose of the universal gravitation constant in newtons law of universal gravitation?

Explanation : According to the law, it says that F ∝ Mm ÷ R²

Where :

For calculating the gravitational force (F), we must have an equation. According to the law, we are ain't getting any equation. Hence, we must convert it by putting a constant.

A constant is any value that is fixed, and it won't change under any circumstance. And in this case, the value of the gravitational constant (G) is 6.67 x 10⁻¹¹.

Now, here comes the final equation :  F = GMm ÷ R²

Where :

Hence, the main purpose of the universal gravitational constant (G) is to have an equation, which is F = GMm ÷ R².