In a specific situation where you want to remove the certain number of characters from a cell, and you want to take a part of the number out. You can use this formula.

Example: I have a cell with this value 0107856985652HJKG. I need to remove the first three values, then take the next 10 characters out.

010 7856985652 HJKG

=LEFT((RIGHT(CellWithYourValue,LEN(CellWithYourValue)-NumberOfLettersToRemoveFromBeginning)),NumberOfLettersToTakeAfterRemoval)

If my value wan in cell A1 the formula will look like this ==>

=LEFT((RIGHT(A1,LEN(A1)-3)),10)