Correct

如许

/ rú xǔ /
Strokes

Example

As a Pronoun

so much; so many

1
Wǎngfèi
枉费
gōng
许工夫
  

So much time has been wasted.

As a Pronoun

so; such

2
Xíng
行路
nán
许难
  

The journey was so difficult.