Hello all:

EXCEL has the function to input calculation results. Say A2=2, B2=3. If we
want to input C2 with A2+B2, then we just, with cursor on C2, need to do:
=A2+B2. The result 5 will input to C2.

Now my question is how to do batch calculation? Say:
A2=2, A3=3, A4=4, ....., An=n, .....
B2=4, B3=6, B4=8, ......, Bn=2n, ....
I want the C column is the summary of A column and B column:
C2=A2+B2, C3=A3+B3, C4=A4+B4, ....., Cn=An+Bn, .....

Because A and B columns are very long, it is too trouble to calculate one
by one.
What is the way to CALCULATE THEM IN A BATCH, just one step to calculate all
of them?

Thank you in advance!