Spreadsheet: Help wanted re.. locating numbers in a cell.

Is there a way to look/search/locate/find a specific string of numbers in a spreadsheet?
Imagine you've a giant page of thousands of cells with different numbers in. I want a quick way to find any cell (or even just 1 cell) that has a specific sequence of numbers within it. e.g. I'm looking for, say 763214 - doesn't matter if there's a decimal point within that sequence or if those numbers are contained within a larger sequence of numbers in the cell . Does that make sense?
Want to avoid using a parallell column with IF(cell=763214;1;0) type command; just want directing to the cell with the relevant sequence in it.
Any help greatly appreciated.