Hello @Mohamed_Fergany ,
You could use
```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE,eval=FALSE)
```
in your first chunk (mark the eval=FALSE) and specify eval=TRUE in the R chunks that you do want evaluated. Depending on calculations in the the non-evaluated chunks this could save you some time.
However the text-part (outside the R-chunks) will still be rendered.
So if this is helpful: you decide !?
Concerning the inline code: show us the code that you want to use in context.