There are 3 points, 4 points and 5 points on three parallel lines respectively, and the three points not on the same parallel line are not collinear, how many triangles have these points as vertices?
三条平行线上分别有3个点，4个点和5个点，且不在同一条平行线上的三个点不共线，以这些点为顶点的三角形共有多少个．
<gadget id="calculator">3 * 6</gadget>
<output>18</output>

<gadget id="calculator">3 * 10</gadget>
<output>30</output>

<gadget id="calculator">18 + 30</gadget>
<output>48</output>

<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<gadget id="calculator">4 * 10</gadget>
<output>40</output>

<gadget id="calculator">12 + 40</gadget>
<output>52</output>

<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<gadget id="calculator">5 * 6</gadget>
<output>30</output>

<gadget id="calculator">15 + 30</gadget>
<output>45</output>

<gadget id="calculator">3 * 4 * 5</gadget>
<output>60</output>

<gadget id="calculator">48 + 52 + 45 + 60</gadget>
<output>205</output>

<result>205</result>