sS formatHours_roundUp(long ms, int decimals default 1) {
  ret formatHours_roundUp(toHours(ms), decimals);
}

sS formatHours_roundUp(double hours, int decimals default 1) {
  S formatted = formatDouble_roundUp(hours, decimals);
  ret eq(formatted, "1") ? "1 hour" : formatted + " hours";
}