The price of two types of sneakers A and B are different in the store. If the price of type A shoes is increased by 40% and the price of type B shoes is reduced by 30%, the prices of the two types of shoes are the same. The original price of type A shoes is the price of type B shoes What percentage of ?
商店里卖A、B两种旅游鞋价格不同，如果A种鞋价格提高40%，B种鞋价格降低30%，则两种鞋的价格相同，原来A种鞋的价格是B种鞋的价格的百分之几？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 + (2/5)</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">100 * (7/5)</gadget>
<output>140</output>

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

<gadget id="calculator">1 - (3/10)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">140 / (7/10)</gadget>
<output>200</output>

<gadget id="calculator">100 / 200</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>