please help with calculating the opening baclance and take into accoung GST for sales and purchases using the perpetual invetory system

Prepare a stock card using the following information A company is registered for GST which it pays quarterly, assume GST was last paid on the 30th of June 2019. It uses weighted average cost allocation method and the perpetual inventory recording method Additional information Cost of opening inventory items per unit is $20 Selling price per unit GST inclusive is $55 All inventory cost per unit includes GST TRANSECTIONS FOR THE MONTH Opening balance is $10 720.00 2 July sale on credit 79 units 5 July sale on credit 70 units 7 July purchased inventory on credit 22 units for $27 11 July sale on credit 66 units 14 July purchased inventory on credit 29 units for $25 18 July sale on credit 75 units 20 July purchased inventory on credit 21 units for $27 22 July sales on credit 63 units 24 July purchased Inventory on credit 23 units for $ 24 29 July sale on credit 57 units 30 July purchased inventory on credit 27 units for $26