Spreadsheet

General description

Implement a simple spreadsheet as a command-line program. It should be able to process table cells.

Each cell may contain:

Non-negative integer
Text strings that start with the character '
String expressions that start with =. Only 1 arithmetic operation (+ - / *)
Expression Example:
- =C1 <--- link to the value in the C1 cell
- =A1+C1 <--- sum of the A1 and C1 cells values
- =A1-C1 <--- difference of the A1 and C1 cells values
- =A1*C1 <--- multiplication of the A1 and C1 cells values
- =A1/C1 <--- division of the A1 and C1 cells values
- =4+3 <--- sum of the 4 and 3 numbers
- =4-3 <--- difference of the 4 and 3 numbers
- =4*3 <--- multiplication of the 4 and 3 numbers
- =4/3 <--- division of the 4 and 3 numbers

Input and expected output

Input:

10          =C2       7       'Java1
=A1+B1      =A2*B1    =B3-C3  'Java2
'Java3      =4-3      5       'Java4

Output:

10          -4        7       Java1
6           -24       -4      Java2
Java3       1         5       Java4