实现外汇汇款金额转换USD转CNY

def solve():
    from pyodide.http import open_url
    account_types_csv = open_url(____).read()
    payment_channels_csv = open_url(____).read()
    accounts_csv = open_url(____).read()
    transfers_csv = open_url(____).read()
    exchange_rates_csv = open_url(____).read()
    swift_routes_csv = open_url(____).read()
    import sqlite3, pandas as pd
    from io import StringIO
    conn = sqlite3.connect(____)
    pd.read_csv(StringIO(____)).to_sql(____)
    row = pd.read_sql_query(____).iloc[____]
    usd_amount = ____
    cny_amount = usd_amount * row['____']
    print(____)
    print(____)
    print(____)
    print(____)
    conn.close()