The difference of 514 minus 3 multiplied by a number is equal to 7, what is this number?
514减3的差乘一个数，等于7，这个数是多少？
<gadget id="calculator">514 - 3</gadget>
<output>511</output>

<gadget id="calculator">7 / 511</gadget>
<output>1/73 = around 0.013699</output>

<result>1/73 = around 0.013699</result>