After subtracting 273 from the number 2001, add 237, then subtract 273, add 237, ..., keep doing this, until the number of times you subtract, the result is exactly equal to 0.
从2001这个数里减去273后，再加上237，然后再减去273，再加上237，…，这样一直做下去，减到第多少次，得数恰好等于0．
<gadget id="calculator">2_001 - 273</gadget>
<output>1_728</output>

<gadget id="calculator">273 - 237</gadget>
<output>36</output>

<gadget id="calculator">1_728 / 36</gadget>
<output>48</output>

<gadget id="calculator">48 + 1</gadget>
<output>49</output>

<result>49</result>