The cost of a commodity is 72 yuan. Originally sold at the price, 100 pieces can be sold every day, and the profit of each piece is 25% of the cost. Later, it is sold at 90% of the price, and the daily sales volume is doubled. According to this calculation, later How much is the profit per day?
某商品成本72元，原来按定价出售，每天可售出100件，每件利润为成本的25%，后来按定价的90%出售，每天销售量提高到原来的2倍，照这样计算，后来每天的利润是多少元？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

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

<gadget id="calculator">72 * (5/4) * (9/10)</gadget>
<output>81</output>

<gadget id="calculator">81 - 72</gadget>
<output>9</output>

<gadget id="calculator">100 * 2</gadget>
<output>200</output>

<gadget id="calculator">9 * 200</gadget>
<output>1_800</output>

<result>1_800</result>