Mr. Zhang bought a famous painting with RMB 80,000, and then he resold the famous painting to Mr. Wang at a profit of 10%. Later, Mr. Wang sold the famous painting back to Mr. Zhang, but Mr. Wang lost 10%, and finally Mr. Zhang sold this famous painting to Mr. Wang at 90% of the price Mr. Wang sold to Mr. Zhang. Is Mr. Zhang "profit" or "loss" in the transaction of the famous painting mentioned above? How much is it?
张先生用80000元人民币购买了一幅名画，随即他将这幅名画转卖给了王先生，获利10%，而后来王先生又将这幅名画返卖给了张先生，但王先生损失了10%，最后张先生按王先生卖给张先生的价格的90%将这幅名画又卖给了王先生．张先生在上述这幅名画交易中是"盈利"还是"亏本"呢？具体是多少元？
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 + (1/10)</gadget>
<output>11/10 = around 1.1</output>

<gadget id="calculator">80_000 * (11/10)</gadget>
<output>88_000</output>

<gadget id="calculator">88_000 - 80_000</gadget>
<output>8_000</output>

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

<gadget id="calculator">88_000 * (9/10)</gadget>
<output>79_200</output>

<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">79_200 * (9/10)</gadget>
<output>71_280</output>

<gadget id="calculator">79_200 - 71_280</gadget>
<output>7_920</output>

<gadget id="calculator">8_000 - 7_920</gadget>
<output>80</output>

<result>80</result>