Toulouse has twice as many sheep as Charleston. Charleston has 4 times as many sheep as Seattle. How many sheep do Toulouse, Charleston, and Seattle have together if Seattle has 20 sheep?
If Seattle has 20 sheep, Charleston has 4 * 20 sheep = 
<gadget id="calculator">20*4</gadget>
<output>80</output>
80 sheep.
Toulouse has twice as many sheep as Charleston, which is 2 * 80 sheep = 
<gadget id="calculator">2*80</gadget>
<output>160</output>
160 sheep.
Together, the three has 20 sheep + 160 sheep + 80 sheep = 
<gadget id="calculator">20+160+80</gadget>
<output>260</output>
260 sheep.

<result>260</result>