This question is telling us to write an English phrase with math symbols.
Let's call Craig's score "c". So C = Craig's score.
Now, we're told that the product of 7 and Craig's score is 98. Let's translate that into math symbols!
"The product of 7 and Craig's score" --> 7 × C
"The product of 7 and Craig's score is 98" --> 7 × C = 98
Now we have a math sentence: 7 × C = 98
We want to figure out what C equals. So, we want to have C on one side of the equals sign and a value on the other side. We can do this by dividing by 7 on both sides. Remember, whatever we do to one side of the equation, we also have to do it to the other side of the equation.
(7 × C) ⁄ 7 = 98 ⁄ 7
Because 7 ⁄ 7 = 1, on the left hand side we have just C and on the right hand side we have 98 ⁄ 7.
Therefore, we have solved for Craig's score: C = 98 ⁄ 7
I hope this helps! :)