Incorrect calculation of EXP

[REWesker]

As seen in attached example, tool calculates 75200 needed exp as 10 battles when it's clearly 11 (7400 exp per battle equals 74000 exp for 10 battles, 1200 exp shy of target).

Problem lies in line 317 of file ./aklevel.html
First, it assumes that one LS-5 battle gives 7500 exp, when it is in fact 7400 (3 * 2000 + 1 * 1000 + 1* 400).
Second, .toFixed(1) may give wrong results, since it modifies all division results that have 0 as first digit after decimal separator to form X.0 that Math.ceil interprets as integer X and doesn't add one to ceil the number

As seen in example:

75200 / 7500 == 10.026666666666667
(10.026666666666667).toFixed(1) == 10.0
Math.ceil(10.0) == 10