plotting – x axis at our desired number of points

I have:

tmax = 1.2*0.1*10^11;
Plot[t^5, {t, 0, tmax}]

Then I get a picture as above. This is pretty easy data and the width of two points in x axis won’t affect the clarity of the figure. I used this example to let you know my requirement.
In MATLAB, we have an option to set the width of the x axis. Look at the second line of the below code in MATLAB.


How to select the plot width as 0.1/100*10^11 in mathematica as easy as in MATLAB. I have asked a similar question earlier and the suggestion I got is really difficult and I didn’t really understand. Is there any easy way? I have searched the documentations and can’t come up with any!