Formula calculation is the operation of recursive equation calculation, which is divorced from the original calculation and completely writes out the calculation process, that is, from the longitudinal calculation.

1. Write the equal sign directly by one-step calculation.

If you want to write vertically in the middle of the horizontal direction. (that is, the horizontal form is in the position of the second number) If the calculation is divided into two steps, a recursive equation will be used. Every step should be aligned with the equal sign, the two lines of the equal sign should be parallel, and the length of the equal sign line should be about half a centimeter.

2. Two-step calculation

To use recursive equations, each step should be aligned and the two lines of the equal sign should be parallel. When moving to the next column, draw a dotted line in the middle to separate it. If there are brackets, count the numbers in brackets first. The equipotential line is about half a centimeter long. If you want to write vertically in the middle of the horizontal direction.

3. Calculate in more than two steps.

To use recursive equations, every step should be aligned with the equal sign, and the two lines of the equal sign should be parallel, and the length of the equal sign line should be about half a centimeter.

I hope I can help you. Thank you. I hope it will be adopted.