It is known that the sum of two addends is 2.85, one of which is 0.53, and what is the other addend.
已知两个加数和是2.85，其中一个加数是0.53，另一个加数是多少．
<gadget id="calculator">2.85 - 0.53</gadget>
<output>2.32</output>

<result>2.32</result>