In the 4*100m relay race held by the school, Class 4 and 1 scored 56.37 seconds, of which the first three rods took 13.05 seconds, 15.25 seconds, and 16.20 seconds respectively. How many seconds did it take for the fourth bar?
在学校举行的4*100米的接力赛中，四1班的成绩是56.37秒，其中前三棒分别用了13.05秒、15.25秒、16.20秒．第四棒用了多少秒？
<gadget id="calculator">13.05 + 15.25 + 16.2</gadget>
<output>44.5</output>

<gadget id="calculator">56.37 - 44.5</gadget>
<output>11.87</output>

<result>11.87</result>