CEDAR RAPIDS — It’s not simply about adding and subtracting numbers, Rob Sand says about his new job as Iowa State Auditor.So the newly elected Democrat plans to follow through on his campaign promise to audit the state’s privately managed Medicaid program even though his predecessor released an audit in late November that found $126 million in savings in 2018.The audit by Republican Auditor Mary Mosiman, who lost her re-election bid to Sand, indicated that Gov.