Teacher Shen borrowed 300,000 yuan from the bank to buy a house. The loan period is 5 years and the annual interest rate is 6.6%. If the monthly repayment amount is the same, how much should Mr. Shen repay on average every month?
沈老师向银行贷款30万元买房，贷款期为5年，年利率为6.6%．如果每月还款的金额相同，沈老师平均每月应还款多少元？
<gadget id="calculator">30 * 10_000</gadget>
<output>300_000</output>

<gadget id="calculator">6.6 / 100</gadget>
<output>0.066</output>

<gadget id="calculator">300_000 * 0.066 * 5</gadget>
<output>99_000</output>

<gadget id="calculator">300_000 + 99_000</gadget>
<output>399_000</output>

<gadget id="calculator">5 * 12</gadget>
<output>60</output>

<gadget id="calculator">399_000 / 60</gadget>
<output>6_650</output>

<result>6_650</result>