In the first round of bowling, Patrick knocked down a total of 70 pins and Richard knocked down 15 more pins than Patrick. In the second round, Patrick knocked down twice as many pins as Richard in the first round and Richard knocked down 3 less than Patrick. How many more pins in total did Richard knock down than Patrick?
In the first round, Richard knocked down 70 + 15 = 
<gadget id="calculator">70+15</gadget>
<output>85</output>
85 pins.
In the second round, Patrick knocked down 85 x 2 = 
<gadget id="calculator">85*2</gadget>
<output>170</output>
170 pins.
In the second round, Richard knocked down 170 - 3 = 
<gadget id="calculator">170-3</gadget>
<output>167</output>
167 pins.
In total, Patrick knocked down 70 + 170 = 
<gadget id="calculator">70+170</gadget>
<output>240</output>
240 pins.
In total, Richard knocked down 85 + 167 = 
<gadget id="calculator">85+167</gadget>
<output>252</output>
252 pins.
Richard knocked down 252 - 240 = 
<gadget id="calculator">252-240</gadget>
<output>12</output>
12 pins more than Patrick.

<result>12</result>