can you explain how to this step by step

A binary mixture containing species A (low boiler) and B (high boiler) is to be separated in a continuous distillation column. The Feed is at its dew point (saturated vapour) and enters the column at a flow rate of 100 mol/h. The Feed contains 40% of the low boiler. The distillate is to have 98% of the low boiler. The process should be able to produce a bottom product with a low boiler concentration of