How can you multiply 5 digit by 2 digit

Put the 5-digit number under the 2-digit number and multiply

5 0 0 0
*     2 0=
that's how you place it and do the multiplication. What digits do you want to multiply/

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.