If you specify a negative scale, Oracle Database rounds the actual data to the specified number of places to the left of the decimal point. For example, specifying (7,-2) means Oracle Database rounds to the nearest hundredths, as shown in Table 26-1.
McCann (2000) found that households in communities with good transit use save an average of about $3,000 annually on transportation costs. Litman (2004) found annual transportation cost savings of about $1,300 per household in cities with well-established rail transit systems compared with cities that lack rail.
For the average household, transportation costs are almost as much as whatâs spent on rent or the direct costs of home ownership: an average of $9,004 annually. Nearly 90% of U.S. households report spending money on gasoline, an average of nearly $3,000 per year.The average cost of gas per month is $250.or the average household, transportation costs are almost as much as whatâs spent on rent or the direct costs of home ownership: an average of $9,004 annually. Nearly 90% of U.S. households report spending money on gasoline, an average of nearly $3,000 per year.