my country's Long March carrier rocket has carried out 70 launches, of which 63 failed. What is the success rate of the launch?
我国长征运载火箭进行了70次发射，其中失败了63次，发射的成功率是多少
<gadget id="calculator">70 - 63</gadget>
<output>7</output>

<gadget id="calculator">7 / 70</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(1/10) * 1</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>