154930

The answer to question number 1 is 142857 x 3 is 428571 and how I got this answer was

1abcde
x 3
________
abcde1
e has to be a number between 1-9 so the only number can be 7, so you have to carry over the 2 so you have to d x3 has to end with a 5 so d has to be 5, and you have to the same with the rest and the next question too. So the letters will be A=4 B=2 C=8 D=5 E=7.
The next answer is 285714x3 = 857142. To get this answer you have to do the same steps.F=8 G=5 H=7 I=1J=4.
I think there is only 1 answer and you can't replace the letters.