Robert, a sales agent, earns a basic salary of $1250 per month and,  10% commission on his monthly sales. Last month, his total sales were $23600. He allocated 20% of his total earnings to savings and the rest of the money to his monthly expenses. How much were his monthly expenses last month?
Robert earned a commission of $23600 x 10/100 = $
<gadget id="calculator">23600*10/100</gadget>
<output>2_360</output>
2360.
So, he earned a total of $1250 + $2360 = $
<gadget id="calculator">1250+2360</gadget>
<output>3_610</output>
3610.
And, he saved $3610 x 20/100 = $
<gadget id="calculator">3610*20/100</gadget>
<output>722</output>
722.
Therefore, his total expenses last month was $3610 - $722= $
<gadget id="calculator">3610-722</gadget>
<output>2_888</output>
2888.

<result>2_888</result>