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Last tested: Oct 25, 2018
You can replace n with the number of sig figs in this formula:
concat(round(${view_name.field_name}/power(10, floor(log(${view_name.field_name}))), n-1), " x 10^", floor(log(${view_name.field_name})))
Example with n=2:
concat(round(${orders.count}/power(10, floor(log(${orders.count}))), 1), " x 10^", floor(log(${orders.count})))
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