The sum of two numbers whose product is 160 is greater than the difference of these two numbers by 4, find the sum of these two numbers.
乘积是160的两个数的和比这两个数的差大4，求这两个数的和．
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">160 / 2</gadget>
<output>80</output>

<gadget id="calculator">80 + 2</gadget>
<output>82</output>

<result>82</result>