Copy formulas with Microsoft Excel

If you've got rows of formulas that are similar (x+y=z), here's an easy way to have Excel solve those for you.

• Click the cell which contains the formula you want to copy.
• Click on the small black square in the lower-right corner of that cell, and hold the mouse button down.
  
• Drag the box down to cover all the cells you want to contain that formula.
  
• When you let go of the mouse button, you will see those cells populate with the formula.