Guys,

Can you help me to proof not my maths problem?
After deduct rm5.8 from rm179.13 how the hell become rm171.23?

This happens when the barricade open before i exit elite highway, i scan smartag once but it did not show my balance, to avoid charge full amount, i scan again n tngo, still doesnt show my card balance, so i just passed to avoid jam.

After checking the balance i found not match, hence i found the tngo “maths calculation” problem.