`a)10101.(5/(111111)+5/(222222)-4/(3.7.11.13.37))`
`=10101.(10/(222222)+5/(222222)-8/(222222))`
`=10101. 7/(222222)`
`=7/(22)`
`b)(1/3+1/7-1/(13))/(2/3+2/7+2/(13)) . (3/4-3/(16)+3/(64)-3/(256))/(1-1/4+1/(16)-1/(64)) + 5/8`
`=(1/3+1/7-1/(13))/(2(1/3+1/7+1/(13))) . (3/4(1-1/4+1/(16)-1/(64)))/(1-1/4+1/(16)-1/(64)) + 5/8`
`=1/2 . 3/4 + 5/8`
`=3/8+5/8`
`=8/8`
`=1`