how to get the sum of the difference of the output from a multiplication and a data set

Please i need hint on how to manipulate the output from a for loop do summation of differences between it and a data set. An example is shown below. I tried it but it only computed for the first for loop neglecting the other data set.

for f = [1 4  8  10 14];
  b=2;
  c=1;
  d=1;
  n=4;
  N= f*b*c*d;
  M=[4.5  10.5   20.5   25.6  30.8];
  Y = (M-N);
  A = sum(Y);
end
disp(A)

Answer 1

[dpb]

OK, with the revised objective, no loop needed...

b=2;
c=1;
d=1;
n=4;
M=[4.5 10.5 20.5 25.6 30.8];
f=[1    4    8   10   14];
N= f*b*c*d;
A = sum(M-N);
disp(A)

[segun]

I tried your the code it gave me five answers instead of a single answer which should be the total sum of "M-N" as a single figure .Please what should i do ?

[dpb]

Oh, different problem than what you wrote...see updated answer.