How many times the keys of a writter have to be pressed in order to write first 400 counting no.'s? Choose the correct choice from the following
A) 998 B) 1000 C) 1092 times D) 1100 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 times
<result>C</result>
How many times the keys of a writter have to be pressed in order to write first 400 counting no.'s?