Use this information below to answer this question 

 ₦
Capital: Opening balance 307,000
Closing balance  342,000
Net profit for the period 121,600
Purchases 706,000
Carriage inwards 17,500
Cost of goods sold  740,700
Total selling, general and 
administration expenses  526,000
Discount received  9,650
Opening stock 98,800

What is the gross profit for the period?