`A = 6. 25 . 8 + 4. 12. 47 + 2. 28 . 24`
`A = (6. 8) . 25 + (4. 12) . 47 + (2. 24) . 28`
`A = 48 . 25 + 48. 47 + 48 . 28`
`A = 48 .(25 + 47 + 28)`
`A = 48. 100`
`A = 4800`
________________________
`B = 35. 34 + 65. 75 + 35. 86 + 65. 45`
`B = (35 . 34 + 35. 86) + (65. 75 + 65. 45)`
`B = 35. (34 + 86) + 65. (75 + 45)`
`B = 35 . 120 + 65. 120`
`B = 120. (35 + 65)`
`B = 12000`
________________________
`C = 341 . 67 + 16. 341 + 659 . 83`
`C = 341. (67 + 16) + 659. 83`
`C = 341 . 83 + 659 . 83`
`C = 83. (341 + 659)`
`C = 83. 1000`
`C = 83000`
_________________________
`D = 2. 4 . 5 . 8 . 25. 42. 125`
`D = (2. 5). (4. 25). (8. 125) . 42`
`D = 10. 100 . 1000 . 42`
`D = 1000000. 42`
`D = 42000000`
_________________________
`E = 19991999. 1998 - 19981998 . 1999`
`E = (1999. 10001). 1998 - 19981998. 1999`
`E = 1999. (10001. 1998) - 19981998. 1999`
`E = 1999. 19981998 - 19981998 . 1999`
`E = 0`
