"The amount of money these women will get you by working double the hours will easily offset that five thousand (5,000) ropals slave cost." Alexander pointed out the simple fact.
And as Gelene's eyes began to bulge with realization, Alexander further added, "And if you really wanted, then you could make these women pay for the slave in installments.
"For example, you can make them pay 50 ropals of the 200 ropals they earn every month and you will recoup that cost in only about eight years."
And then using some more simple maths, Alexander showed Gelene that even after paying 50 ropals for the slave and another 60 to 70 ropals looking after the slave, the tailors will be able to make at least 80 ropals a month of their 200 ropal salary, which would be 30% more than the current 60 ropals.