Dave weighs 175 pounds and can bench press three times his body weight.  Craig can only bench press 20% of the amount Dave can.  Mark is new and can bench press 50 pounds less than Craig.  How much can Mark bench press?
Dave weighs 175 pounds and can bench press three times his body weight, so he can bench press 175*3 = 
<gadget id="calculator">175*3</gadget>
<output>525</output>
525 pounds.
Craig can only bench press 20% of Dave's 525 pounds, so Craig can bench press .20*525 = 
<gadget id="calculator">20*.01*525</gadget>
<output>105</output>
105 pounds.
Craig bench presses 105 pounds and Mark does 50 pounds less than Craig, so Mark can only press 105-50 = 
<gadget id="calculator">105-50</gadget>
<output>55</output>
55 pounds.

<result>55</result>