The number of A is 33 times more than that of B. If the sum of the two numbers of A and B is 138, what is the number of B?
甲数比乙败的6倍多33，若甲乙两数的和为138，那么乙数是多少？
<gadget id="calculator">138 - 33</gadget>
<output>105</output>

<gadget id="calculator">1 + 6</gadget>
<output>7</output>

<gadget id="calculator">105 / 7</gadget>
<output>15</output>

<result>15</result>