Do not be intimidated by the fact that there are 10^{18} or 1 quintillion possibilities to check.... Through the power of reasoning and computational-sense, you can narrow things considerably!

**Hint:** Start somewhere that makes sense...make a guess...reason out the possibilities. For example, where can you place the digit 1? Have fun.

**Solution Commentary:** Multiple answers can be found....much less than the 10^{18} initial possibilities. For example, I found at least four answers involving the multiplicand 375. Can you find these four? Can you find others that do not involve 375?