The size of the shoes we wear is usually in "yard" or "centimeter", and the conversion relationship between them is a=((b)/2)+5 (a represents the number of centimeters, and b represents the number of sizes). So how many centimeters are the shoes of size 34 using "centimeters" as the unit.
我们所穿的鞋的尺码通常用"码"或"厘米"作单位，它们之间的换算关系是a=((b)/2)+5(a表示厘米数，b表示尺码数)．那么34码的鞋子用"厘米"作单位就是多少厘米．
<gadget id="calculator">34 / 2</gadget>
<output>17</output>

<gadget id="calculator">17 + 5</gadget>
<output>22</output>

<result>22</result>