25×с×7

To solve the multiplication, you just need to multiply the numerical values together and keep the variable 'c' as it is:

25 × c × 7

First, multiply the numbers 25 and 7:

25 × 7 = 175

Now, you have:

175 × c

Which you can write as:

175c

So, 25 × c × 7 = 175c.