The U$.$S$.$ Airfilter company has hired you as a supply chain consultant. The company makes air filters for residential heating and air$-$conditioning systems. These filters are made in a single plant located in Louisville, Kentucky, in the United States. They are distributed to retailers through wholesale centers in $100$ locations in the United States, Canada, and Europe. You have collected the following data relating to the value of inventory in the U$.$S$.$ Airfilter supply chain:

QUARTER $1$

$($JANUARY

THROUGH

MARCH$)$ QUARTER $2$

$($APRIL THROUGH

JUNE$)$ QUARTER $3$

$($JULY

THROUGH

SEPTEMBER$)$ QUARTER $4$

$($OCTOBER

THROUGH

DECEMBER$)$

All amounts in millions of U$.$S$.$ dollars

Sales $($total quarter$)$:

United states $370498408506$

Canada $10572169148$

Europe $78385019$

Cost of goods sold $($total quarter$)321354369398$

Raw materials at the Louisville plant

$($end$-$of$-$quarter$)52695667$

Work$-$in$-$process and finished goods at

the Louisville plant $($end$-$of$-$quarter$)194133142321$

Distribution center inventory

$($end$-$of$-$quarter$)$:

United states $60443034$

Canada $11181926$

Europe $8596$