Subset sum is something that comes up quite often when bookkeepers need to reconcile accounts and there's some transactions missing. And indeed, the Excel solve

Subset sum is something that comes up quite often when bookkeepers need to reconcile accounts and there's some transactions missing. And indeed, the Excel solvers work well enough. These days I'm no longer surprised to find out that a classic selection problem has an Excel plug-in to solve it. There's even one for the multiple knapsack apparently.