Dad's height is 180 cm, and Xiao Ming's height is his father's (7/9). The height ratio of Xiao Ming and his mother is 7:8. How tall is mother in centimeters?
爸爸身高180厘米，小明身高是爸爸的(7/9)．小明和妈妈身高比是7：8．妈妈身高多少厘米？
<gadget id="calculator">7 / 9</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">(7/9) / (7/8)</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">180 * (8/9)</gadget>
<output>160</output>

<result>160</result>