The number A is 5.4 less than the number B. After removing the decimal point of the number A, the two numbers are equal. What is the number B?
甲数比乙数小5.4，把甲数的小数点去掉后两个数相等，乙数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">5.4 / 9</gadget>
<output>0.6</output>

<result>0.6</result>