How many times the keys of a typewriter have to be pressed in order to write first 400 counting numbers? Choose the correct choice from the following answers:
A) 1200	B) 1092	C) 1082	D) 1192	E) 1292
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   ANSWER:1092
<result>B</result>
How many times the keys of a typewriter have to be pressed in order to write first 400 counting numbers?