The school bought back 174 boxes of chalk, of which 68 boxes were colored chalks, and the rest were white chalks. How many boxes of colored chalks are less than white chalks?
学校买回174盒粉笔，其中68盒是彩色粉笔，其余的是白粉笔，彩色粉笔比白粉笔少多少盒？
<gadget id="calculator">174 - 68</gadget>
<output>106</output>

<gadget id="calculator">106 - 68</gadget>
<output>38</output>

<result>38</result>