4 times 25 times 0.86

125 times 8 divided by 50

7.6 times half divided by 1.9( 1-0)

1111time (9 times 7+37)

1998 times (0.37-0. 19+0.82)

1-( 1/2 plus 1/3)-( 1/4 plus 1/5)