Xiao Ming and Xiao Hua collect stamps, and the number of stamps collected by Xiao Hua is less than that of Xiao Ming (1/6). If Xiaoming takes out his own (1/5), and Xiaohua takes out his own 14 stamps, then the stamps of the two are equal. How many cards did Xiao Ming have?
小明和小华集邮，小华的张数比小明少(1/6)．若小明拿出自己的(1/5)，小华取出自己的14张，这时两人的邮票相等．小明原来有多少张？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - 1 - (1/6)</gadget>
<output>-1/6 = around -0.166667</output>

<gadget id="calculator">(1/5) + (-1/6)</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">14 / (1/30)</gadget>
<output>420</output>

<result>420</result>