The students visited the planetarium. There were 154 people in the sixth grade, more people in the fifth grade than the sixth grade (1/11), and fewer people in the fourth grade than the fifth grade (1/8). How many people went to the fourth grade?
同学们参观天文馆，六年级去了154人，五年级去的人数比六年级多(1/11)，四年级去的人比五年级少(1/8)．四年级去了多少人？
<gadget id="calculator">1 / 11</gadget>
<output>1/11 = around 0.090909</output>

<gadget id="calculator">1 + (1/11)</gadget>
<output>12/11 = around 1.090909</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 - (1/8)</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">154 * (12/11) * (7/8)</gadget>
<output>147</output>

<result>147</result>