A salt affected crop field is to be leached with irrigation water having salt concentration of 3.5 meq L^-1. Salt concentration in the saturation extract of soil is 15.2 meq L^-1. Leaching efficiency of the field is 55%. In the month of March, the observed reference evapotranspiration and effective rainfall in this area are 150 mm and 75 mm, respectively. If the average crop coefficient in this month is 1.05, the leaching requirement for the entire month in mm is _______. (rounded off to 2 decimal places)