If A/27=90...B (A is the dividend and B is the remainder), to make the remainder B the largest, then what should be the value of A?
如果A/27=90…B(A是被除数，B是余数)，要使余数B最大，那么，A应该是多少．
<gadget id="calculator">27 * 90</gadget>
<output>2_430</output>

<gadget id="calculator">27 - 1</gadget>
<output>26</output>

<gadget id="calculator">2_430 + 26</gadget>
<output>2_456</output>

<result>2_456</result>