In a fundraiser car wash activity, the 5th graders raised $147 on Friday. On Saturday, they made $7 more than twice their Friday earnings. Their earnings on Sunday are $78 more than their earnings on Friday. How much did they earn in three days?
Twice their Friday's earnings is $147 x 2 = $
<gadget id="calculator">147*2</gadget>
<output>294</output>
294.
So, their Saturday earnings was $294 + $7 = $
<gadget id="calculator">294+7</gadget>
<output>301</output>
301.
Their Sunday earnings was $147 + $78 = $
<gadget id="calculator">147+78</gadget>
<output>225</output>
225.
Therefore, their total earnings in three days was $147 + $301 + $225 = $
<gadget id="calculator">147+301+225</gadget>
<output>673</output>
673.

<result>673</result>