A store sells a certain garment at the cost price plus 40%, and then sells it at 30% off the original price. The price after the price reduction is 245 yuan. How much is the cost price of this garment?
某商店将某种服装按成本价加40%作为售价，后按原价的七折出售，降价后的售价为245元，问这种服装的成本价是多少元？
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) * (7/10)</gadget>
<output>7/25 = around 0.28</output>

<gadget id="calculator">(7/10) + (7/25)</gadget>
<output>49/50 = around 0.98</output>

<gadget id="calculator">245 / (49/50)</gadget>
<output>250</output>

<result>250</result>