Add the ones, tens, hundreds and thousands of each year, and the result is called the "lucky number" of the year. For example, the "lucky number" in 1947 is 1+9+4+7=21 , then, what is the sum of the "lucky numbers" of these 70 years from 1948 to 2017? Answer: how much.
将每个年份的个位、十位、百位和千位相加，所得结果称为这个年份的"幸运数"，例如，1947年的"幸运数"为1+9+4+7=21，那么，从1948年到2017年这70个年份的"幸运数"之和为多少？答案：多少．
<gadget id="calculator">1 * 52</gadget>
<output>52</output>

<gadget id="calculator">9 * 52</gadget>
<output>468</output>

<gadget id="calculator">52 + 468</gadget>
<output>520</output>

<gadget id="calculator">2 * 18</gadget>
<output>36</output>

<gadget id="calculator">0 * 18</gadget>
<output>0</output>

<gadget id="calculator">36 + 0</gadget>
<output>36</output>

<gadget id="calculator">2 * 4</gadget>
<output>8</output>

<gadget id="calculator">10 * 5</gadget>
<output>50</output>

<gadget id="calculator">10 * 6</gadget>
<output>60</output>

<gadget id="calculator">10 * 7</gadget>
<output>70</output>

<gadget id="calculator">10 * 8</gadget>
<output>80</output>

<gadget id="calculator">10 * 9</gadget>
<output>90</output>

<gadget id="calculator">10 * 0</gadget>
<output>0</output>

<gadget id="calculator">8 * 1</gadget>
<output>8</output>

<gadget id="calculator">8 + 50 + 60 + 70 + 80 + 90 + 0 + 8</gadget>
<output>366</output>

<gadget id="calculator">0 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9</gadget>
<output>45</output>

<gadget id="calculator">45 * 7</gadget>
<output>315</output>

<gadget id="calculator">520 + 36 + 366 + 315</gadget>
<output>1_237</output>

<result>1_237</result>