Mark is a copy-editor. He edits an equal number of sentences each week for two different publishers, who each pay him a different rate per sentence. Publisher B pays Mark twice what Publisher A pays. Mark edits a total number of 1000 sentences each week, and Publisher A pays him 5 cents per sentence. How much does Mark make in a week, in cents?
Since Mark edits an equal number of sentences for each publisher, he edits 1000 / 2 = 
<gadget id="calculator">1000/2</gadget>
<output>500</output>
500 sentences for each of them.
From Publisher A, he earns 5 cents per sentence * 500 sentences = 
<gadget id="calculator">5*500</gadget>
<output>2_500</output>
2500 cents.
Since Publisher B pays Mark twice as much, he earns 5 * 2 = 
<gadget id="calculator">5*2</gadget>
<output>10</output>
10 cents per sentence from Publisher B.
Thus, he earns 10 cents per sentence * 500 sentences = 
<gadget id="calculator">10*500</gadget>
<output>5_000</output>
5000 cents from publisher B.
Thus, he earns 2500 + 5000 = 
<gadget id="calculator">2500+5000</gadget>
<output>7_500</output>
7500 cents in total.

<result>7_500</result>