Suppose A and B are natural numbers, if the new operation is defined as A↑B=A*7-B/3+21, then 5↑6=how much.
设A、B是自然数，如果定义新运算为A↑B=A*7-B/3+21，那么5↑6=多少．
<gadget id="calculator">5 * 7</gadget>
<output>35</output>

<gadget id="calculator">6 / 3</gadget>
<output>2</output>

<gadget id="calculator">35 - 2</gadget>
<output>33</output>

<gadget id="calculator">33 + 21</gadget>
<output>54</output>

<result>54</result>