I am plotting sin wave in gnu-plot and taking values of x-axis in milliseconds.

I have been using this code:

```
set timefmt "%S"
set format x "%.3S"
plot 3*sin(100*pi*x)
```

The graph that I got is like this:

but i want to show the x-axis ticks as 0,5,10 instead of 0.005, .015. How can i do that?