store now buys 10 pieces of a certain product at a price of 15 yuan each from place A, and buys 40 pieces of the same product from place B at a price of 12.5 yuan each. If these goods are sold, they will be sold at a 20% discount on the price What is the price per unit of this commodity if the total interest rate is to be 12%?
某商店现在甲地以每件15元的价格购进某种商品10件，又从乙地以每件12.5元架构购进同种商品40件，如果销售这些商品时，都按标价的8折销售，且要使总利率达到12%，那么这种商品每件的标价是多少？
<gadget id="calculator">15 * 10</gadget>
<output>150</output>

<gadget id="calculator">12 / 100</gadget>
<output>3/25 = around 0.12</output>

<gadget id="calculator">15 * 10 * (3/25)</gadget>
<output>18</output>

<gadget id="calculator">12.5 * 40</gadget>
<output>500</output>

<gadget id="calculator">12.5 * 40 * (3/25)</gadget>
<output>60</output>

<gadget id="calculator">150 + 18 + 500 + 60</gadget>
<output>728</output>

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">10 * (4/5)</gadget>
<output>8</output>

<gadget id="calculator">40 * (4/5)</gadget>
<output>32</output>

<gadget id="calculator">8 + 32</gadget>
<output>40</output>

<gadget id="calculator">728 / 40</gadget>
<output>91/5 = around 18.2</output>

<result>91/5 = around 18.2</result>