The length of shoes is usually in "centimeter" or "yard", and the conversion relationship between them is a=(1/2)b+5. (a indicates the number of centimeters, and b indicates the number of yards) According to this relationship, what is the size of a shoe with a length of 22 centimeters converted into a unit of "yard".
鞋的长度通常用"厘米"或"码"作单位，它们之间的换算关系是a=(1/2)b+5．(a表示厘米数，b表示码数)根据这个关系，长度22厘米的鞋换算成以"码"作单位是多少码．
<gadget id="calculator">44 - 10</gadget>
<output>34</output>

<result>34</result>