The answer is 2 and negative 9
27.768
Multiply 890 and 312
This equals 277680
We know that there were 4 numbers behind a decimal point
Therefore the last four numbers of 277680 need to be behind a decimal point as well
So you're answer is 27.7680 or 27.768
Cheese $1.99 * 1/2 = $1.00
Sliced Ham $3.29 * 3 = $9.87
Bread $1.59 * 2 = $3.18
Potato Chips $3 * 2 = $6
Salsa $1.39 * 1 = $1.39
Total $1.00+$9.87+$3.18+$6+$1.39
Total Spent $21.44
Coupon 1 $21.44-$4.00=$17.44
Coupon 2 $21.44 * 10% = $2.14
$21.44 - $2.14 =$19.30
Coupon 1 will save you the most money