<human>:  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?
<bot>: How much was his commission? ** Robert earned a commission of $23600 x 10/100 = $<<23600*10/100=2360>>2360.
How much did Robert earn in total? ** So, he earned a total of $1250 + $2360 = $<<1250+2360=3610>>3610.
How much did Robert save? ** And, he saved $3610 x 20/100 = $<<3610*20/100=722>>722.
How much were his monthly expenses last month? ** Therefore, his total expenses last month was $3610 - $722= $<<3610-722=2888>>2888
#### 2888