what is a formula?write the formula to add the contents of cells b4,b5,b6,b7 and multiply the sum by the contents of the cell 10

what is a formula?write the formula to add the contents of cells b4,b5

1.	what is a formula?write the formula to add the contents of cells b4,b5,b6,b7 and multiply the sum by the contents of the cell 10
Answer» select the cells from B4 to B7 using a right CLICK. when selected, PRESS on formula TAB. in formula tab, CHOOSE the option Autosum.