What is the product of the reciprocal of 10 and the sum of (4/5) multiplied by the number 7 (1/13) less than 8?
10的倒数与(4/5)的和乘比8少7(1/13)的数，积是多少？
<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">10 / 13</gadget>
<output>10/13 = around 0.769231</output>

<gadget id="calculator">(9/10) * (10/13)</gadget>
<output>9/13 = around 0.692308</output>

<result>9/13 = around 0.692308</result>