= 1/7 * [ 12/ 16-(7/ 16-2/ 16)] =28 * 1/4+ 13 * 1/4- 1/4

= 1/7 * 1/ 16 * ( 12-7+2) =(28+ 13- 1) * 1/4

88.8*94+(0.8* 1/5)*888 1.8*(407-3.87 / 0.9)

=888 * [9.4+(0.8*0.2)] = 1.8*407 - 3.87 * 1.8 / 0.9

=888 * 9.56 =(2-0.2) * 407-3.87*2

=888 * (10-0.44) (the following steps are optional)

=888 * 10 - 888 *0.44

(0.25+3/8) / ( 1.75-7/8) ( 1- 1/2+ 1/8) / 0.25

=(2/8+3/8) / ( 14/8-7/8) = ( 1- 1/2+ 1/8) / 1/4

=4 * ( 1-4/8+ 1/8)