Question 117608
I tried to look for something useful to help with this problem.
I made 7xy equal to (700 + 10x + y).
I made 4z equal to (40 + z).
Then multiplied those together to get
{{{28000+700z+400x+10xz+40y+yz=abcde}}}
That didn't inspire any great thoughts. 
In the end I worked up a simple EXCEL spreadsheet that cycled through the available numbers until it worked.
A less than elegant solution. 
I'm not sure of the benefit of the exercise. 
But here's the answer. 
{{{7highlight(15) x 4highlight(6) = highlight(32890)}}}