The number of A is 7 times of the number of B, the number of A is 360 more than the number of B, what is the number of B?
甲数是乙数的7倍，甲数比乙数多360，乙数是多少．
<gadget id="calculator">7 - 1</gadget>
<output>6</output>

<gadget id="calculator">360 / 6</gadget>
<output>60</output>

<result>60</result>