ID JUST BOUGHT A CASIO CASH REGISTER MODEL TE-M80-S
ID LIKE TO ASK SOMEBODY KNOWS ABOUT THE SETTING OF THE SAID MACHINE HERE ARE SOME EXAMPLE(QTY=1.5 KG PRICE=115/KG)WHEN I GOING TO INPUT THE 1.5KG THEN MULTIPLY TO THE DEPARTMENT ASSIGNED ERROR WILL OCCURE. PLS SOMEBODY HELP ME TO SOLVE THIS PROBLEM. THANKS

Hi.
The default for most models is quantity x amount, so you would multiply fractions like this:

1.5 x 115 then press a department

If you still get an error, can you tell me what the error number is (if any)?