"The force of gravity, F..." So we start with just F
"... is equal to..." F=
"... the product of..." means we're going to multiply some things. What will we be multiplying together? Answer: "the gravitational constant (G), the mass of the first object (m1), and the mass of the second object (m2)..." F = G × m1 × m2 ...
"... divided by..." F = (G × m1 × m2) ÷ (...)
"... the square of..." F=(G × m1 × m2) ÷ (...)^2
"...the distance between their centers (d)." F=(G × m1 × m2) ÷ (d^2)