A car travels from Jiaxing City to Huajiang City at an average of 65 kilometers per hour, and after 7 hours there is still 54 kilometers to Huajiang City. How far is it from Jiaxing to Huajiang?
一辆汽车从嘉兴市去华江市，平均每小时行65千米，7小时后还有54千米到华江市．从嘉兴市去华江市有多少千米？
<gadget id="calculator">65 * 7</gadget>
<output>455</output>

<gadget id="calculator">455 + 54</gadget>
<output>509</output>

<result>509</result>