What is the number 298 in the sequence 4, 7, 10, ... 295, 298.
数列4，7，10，…295，298中298是第多少项．
<gadget id="calculator">298 - 1</gadget>
<output>297</output>

<gadget id="calculator">297 / 3</gadget>
<output>99</output>

<result>99</result>