Am I doing this correctly, This is code for Visual studio and we have to write exactly what it is doing

I just want to make sure for C that i amd doing that one correctly

c = b*4+a

So it's taking the out part of B and multiplying it by 4 then adding the output of A correct?

A = txtA.Text

B = txtB.Text

C = txtC.Text

a = a * 2 + b

b = a *3+b

c = b*4+a

OutA.Text = a

OutB.Text = B

OutC.Text = C

Output of A would be = 7 * 2 + 9 = 23

Output of B would be = 7 * 3 +9 = 28

Output of C would be = 28 * 4 + 23 = 135