How many times thekeys of a writter have to bepressed in order to write first 400 counting no's?  Pick one.
A) 900	B) 980	C) 1000	D) 1092	E) 1200
1 to 9 = 9 * 1= 
<gadget id="calculator">9 * 1</gadget>
<output>9</output>
9   10 to 99= 90 * 2= 
<gadget id="calculator">90 * 2</gadget>
<output>180</output>
180   100 to 400= 301 * 3= 
<gadget id="calculator">301 * 3</gadget>
<output>903</output>
903   -----------   1092   1092
<result>D</result>
How many times thekeys of a writter have to bepressed in order to write first 400 counting no's?