On a tough week, Haji's mother sells goods worth $800, which is half the amount she sells on a good week. What's the total amount of money she makes if she has 5 good weeks and 3 tough weeks?
If on a tough week she sells half what she sells on a good week, then on a good week she sells 800*2 = 
<gadget id="calculator">800*2</gadget>
<output>1_600</output>
1600 dollars.
If she had 5 good weeks, the amount is 5*1600 = 
<gadget id="calculator">5*1600</gadget>
<output>8_000</output>
8000 dollars.
During the 3 tough weeks, she sells 3*800 = 
<gadget id="calculator">3*800</gadget>
<output>2_400</output>
2400 dollars.
The total amount she sold in both weeks is 2400+8000 = 
<gadget id="calculator">2400+8000</gadget>
<output>10_400</output>
10400 dollars.

<result>10_400</result>