Get cell value as decimal via Laravel-Excel

I import the *.xlsx document with laravel-excel. The target cell is filled with the formula (column auto-sum "=BO107*0,95+18,71").

$dateCell = $rowsObject->getCell('A108');

In the echo, I get "=BO107*0,95+18,71" as text, although I need a number that is obtained as a result of doing this vormula. so get it?

via Chebli Mohamed