On the eve of "June 1st", the brigade department divided the task of making small toys for kindergartens to the sixth and fourth graders at a ratio of 5:3. The fourth grade actually did 99 tasks, exceeding 10% of the assigned tasks. How many tasks were originally scheduled for the sixth grade?
"六一"前夕，大队部把为幼儿园做小玩具的任务按5：3分给六年级和四年级学生．四年级实际做了99件，超过分配任务的10%，六年级原定任务是多少件？
<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 + (1/10)</gadget>
<output>11/10 = around 1.1</output>

<gadget id="calculator">(3/8) * (11/10)</gadget>
<output>33/80 = around 0.4125</output>

<gadget id="calculator">99 / (33/80)</gadget>
<output>240</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">240 * (5/8)</gadget>
<output>150</output>

<result>150</result>