store buys 1000 toys of the same specification, but some toys are damaged during transportation, and the profit is 50% after the undamaged toys are sold out. Broken toys are sold at a reduced price, resulting in a 10% loss. The total profit margin of the last batch of toys is 39.2%. How many were damaged in transit?
某商店购进1000个同一规格的玩具，运输途中破损了一些玩具，未破损的玩具卖完后利润为50%．破损的玩具降价出售，亏损了10%．最后这批玩具的总结算利润率是39.2%．运输过程中破损了多少个？
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1_000 * (1/10)</gadget>
<output>100</output>

<gadget id="calculator">39.2 / 100</gadget>
<output>0.392</output>

<gadget id="calculator">1_000 * 0.392</gadget>
<output>392</output>

<gadget id="calculator">392 - 1_000</gadget>
<output>-608</output>

<gadget id="calculator">100 + 1_000 + (-608)</gadget>
<output>492</output>

<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/10) - 1</gadget>
<output>-9/10 = around -0.9</output>

<gadget id="calculator">1 + (1/2) + (-9/10)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">492 / (3/5)</gadget>
<output>820</output>

<gadget id="calculator">1_000 - 820</gadget>
<output>180</output>

<result>180</result>