Something
public text v1 · immutable /* This rounds down by billing increment, so they cant go over during rating */
$floor=floor($total/$inc);
$total = $floor * $inc;
// When total=30
// and inc =6
// floor is 4 , should be 5 /* This rounds down by billing increment, so they cant go over during rating */
$floor=floor($total/$inc);
$total = $floor * $inc;
// When total=30
// and inc =6
// floor is 4 , should be 5