A person buys a set of modular furniture for 20,000 yuan. One year later, he hands over 75% of the items worth 12,000 yuan to the entrusted store for consignment, and pays a handling fee of 5% of the consignment price. The rest of the items are kept for his own use. 30% of the goods on consignment were sold at the consignment price, and 10% was damaged. The entrusted store compensated the loss according to the consignment price, and 20% of the part that someone kept for himself was also damaged. Finally, he put all the remaining items in the two places How much does this person lose in total if he sells at 70% of the original price?
某人用20000元买一套组合家具，一年后将其中价值75%的物品交给委托商店按价12000元寄售，并按寄售价的5%付了手续费，其余物品自己留用，后来寄售的这部分商品，按寄售价卖出30%，损坏10%，委托商店按寄售价赔偿了损失，某人自己留用的部分也损坏20%，最后他把两处剩下的物品全部按原价的70%卖出，这个人共损失多少元？
<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

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

<gadget id="calculator">(3/4) * (3/5)</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(1/4) * (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(9/20) + (1/5)</gadget>
<output>13/20 = around 0.65</output>

<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">20_000 * (13/20) * (7/10)</gadget>
<output>9_100</output>

<gadget id="calculator">(3/10) + (1/10)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">12_000 * (2/5)</gadget>
<output>4_800</output>

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">12_000 * (1/20)</gadget>
<output>600</output>

<gadget id="calculator">4_800 - 600</gadget>
<output>4_200</output>

<gadget id="calculator">9_100 + 4_200</gadget>
<output>13_300</output>

<gadget id="calculator">20_000 - 13_300</gadget>
<output>6_700</output>

<result>6_700</result>