Number A is 7 times more than number B by 12. It is known that number B is 345. Find the number of A.
甲数比乙数的12倍还多7，已知乙数是345，求甲数．
<gadget id="calculator">345 * 12</gadget>
<output>4_140</output>

<gadget id="calculator">4_140 + 7</gadget>
<output>4_147</output>

<result>4_147</result>