$1-74E$ Blood pressure is usually measured by wrapping a closed air$-$filled jacket equipped with a pressure gage around the upper arm of a person at the level of the heart. Using a mercury manometer and a stethoscope, the systolic pressure $($the maximum pressure when the heart is pumping$)$ and the diastolic pressure $($the minimum pressure when the heart is resting$)$ are measured in mm Hg $.$ The systolic and diastolic pressures of a healthy person are about $120$ mm Hg and $80$ mm Hg $,$ respectively, and are indicated as $120/80.$ Express both of these gage pressures in kPa $,$ psi, and meter water column.