48 people are riding a bus. On the first stop, 8 passengers get off, and 5 times as many people as the number who got off from the bus get into the bus. On the second stop 21, passengers get off and 3 times fewer passengers get on. How many passengers are riding the bus after the second stop?
At the first stop, 5 * 8 = 
<gadget id="calculator">5*8</gadget>
<output>40</output>
40 passengers get on the bus.
After the first stop the bus has ( 48 - 8 ) + 40 = 
<gadget id="calculator">48-8+40</gadget>
<output>80</output>
80 passengers.
At the second stop, 21 / 3 = 
<gadget id="calculator">21/3</gadget>
<output>7</output>
7 passengers get on the bus.
After the second stop there are ( 80 - 21 ) + 7 = 
<gadget id="calculator">80-21+7</gadget>
<output>66</output>
66 passengers.

<result>66</result>