To add these fractions, we need to find a common denominator. The least common multiple of 100, 21, 8, 32, and 7 is 672.

Converting each fraction to have a denominator of 672:

(75/100) * (672/672) = 504/672
(18/21) * (32/32) = 576/672
(2/8) * (84/84) = 168/672
(19/32) * (21/21) = 399/672
(1/7) * (96/96) = 96/672
(13/32) * (21/21) = 273/672

Now, we can add the fractions:

504/672 + 576/672 + 168/672 + 399/672 + 96/672 + 273/672

Combining the numerators:

(504 + 576 + 168 + 399 + 96 + 273)/672

= 2016/672

Simplifying the fraction:

2016/672 = 3

Therefore, 75/100 + 18/21 + 2/8 + 19/32 + 1/7 + 13/32 = 3.