To make 3 liters of ketchup Ashley needs 69 kg of tomatoes.  How many kilos of tomatoes does Ashley need to make 5 liters of ketchup?
One liter of ketchup is made from 69 kg / 3 liters = 
<gadget id="calculator">69/3</gadget>
<output>23</output>
23 kg/liter of tomatoes.
Ashley needs 23 kg/liter * 5 liters = 
<gadget id="calculator">23*5</gadget>
<output>115</output>
115 kg of tomatoes.

<result>115</result>