python DataFrameで指定列のデータを100万で割る　例

import pandas as pd
...
df['売上高(百万)'] = pd.to_numeric(df['売上高(百万)'], errors='coerce') / 1000000
df['営業利益(百万)'] = pd.to_numeric(df['営業利益(百万)'], errors='coerce')  / 1000000
df['経常利益(百万)'] = pd.to_numeric(df['経常利益(百万)'], errors='coerce')  / 1000000
df['当期純利益(百万)'] = pd.to_numeric(df['当期純利益(百万)'], errors='coerce')  / 1000000