The number of apricot trees in the orchard is the largest prime number within 50, and the number of pear trees is 15 times more than twice the number of apricot trees. How many pear trees are there?
果园里杏树的棵数是50以内最大的质数，梨树的棵数比杏树的2倍多15棵，梨树多少棵？
<gadget id="calculator">47 * 2</gadget>
<output>94</output>

<gadget id="calculator">94 + 15</gadget>
<output>109</output>

<result>109</result>