The extracurricular activities started. The students made a model of an airplane. The first group made 12 models in 1 minute, and the second group made 11 models in 13 minutes. On average, how many minutes slower did the second group make than the first group for each model?
课外活动开始了，同学们要做一种飞机模型，第一组1分钟做了12个，第二组13分钟做了11个，平均每做一个模型第二组比第一组慢多少分钟？
<gadget id="calculator">13 / 11</gadget>
<output>13/11 = around 1.181818</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(13/11) - (1/12)</gadget>
<output>145/132 = around 1.098485</output>

<result>145/132 = around 1.098485</result>