TPC issue: results are slightly off due to floating point/doubles - Q15, Q1

```
Query 15 *** FAILED ***
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Message:	List((8449,Supplier#000008449,Wp34zim9qYFbVctdW,20-469-856-8873,1772627.2087)) did not equal List((8449,Supplier#000008449,Wp34zim9qYFbVctdW,20-469-856-8873,1772627.2087000003))
```

This is a quick-win, just in terms of knowing where we stand
