Setting like the "Add" on a calculator

When I enter the characters: 124578 the result in the cell is 1245.78. This sets the decimal two characters to the left of the last character I type. I use this extensively in Excel when posting my Checkbook register. This would save typing the decimal into every entry. I think it is called “accounting”. As stated above it’s like the “Add” option on a calculator.

RFO