I can only try
I actually thought I got it after the first line but I was wrong.
I did 1 x 5 x 8 x 1 x 2 = 80.
But no!
Next I found the prime factorizations and got almost nowhere on the first line (except that I found many instances of the number 2) but on the second line there was one 7 on the left side and two on the right so I knew that one of the terms was squared.
The rest was smooth sailing.