The school brought a batch of saplings, the teacher planted 10%, and the rest was distributed to three classes A, B, and C according to 5:4:3. It is known that the teacher planted 55 fewer saplings than class A. How many saplings are there in this batch? ?
学校运来一批树苗，老师栽种了10%，余下的按5：4：3分配给甲、乙、丙三个班级，已知老师比甲班少栽种了55棵，这批树苗共有多少棵？
<gadget id="calculator">5 + 4 + 3</gadget>
<output>12</output>

<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

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

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">(5/12) * (9/10)</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(3/8) - (1/10)</gadget>
<output>11/40 = around 0.275</output>

<gadget id="calculator">55 / (11/40)</gadget>
<output>200</output>

<result>200</result>