在R中使用paste0()在单词之间留很多空格

I use paste0() to print the text below but I want to set distance by using many spaces between (Form 1003) and No

paste0("Mortgage Application (Form 1003)",'','',"No",collapse = '').

结果应类似于:抵押申请(表格1003)________。 ________是空白。