Common Sense Evaluation

What is 111,111,111 multiplied by 111,111,111?   Show answer 11,111,111 multiplied by 111,111,111 equals 12,345,678,987,654,321

 

Find the four digit number in which the first digit is one fourth of the last digit, the second digit is 6 times the first digit, and the third digit is the second digit plus 3.