A washing machine is reduced to the original price (9/10) in the promotional activity. After another 10% price reduction, the current price is 1215 yuan. What is the original price of this washing machine?
一台洗衣机在促销活动中降为原价的(9/10)再一次降价10%后现价是1215元，这台洗衣机原价是多少元？
<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

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

<gadget id="calculator">(9/10) * (1/10)</gadget>
<output>9/100 = around 0.09</output>

<gadget id="calculator">(9/10) - (9/100)</gadget>
<output>81/100 = around 0.81</output>

<gadget id="calculator">1_215 / (81/100)</gadget>
<output>1_500</output>

<result>1_500</result>