Make test^js failed with a float precision error

[chr15m]

TEST: (/ (- (+ 515 (* 222 311)) 300) 41) -> ['','1689'] -> FAIL (line 15):
    Expected : '(/ (- (+ 515 (* 222 311)) 300) 41)\r\n1689'
    Got      : '(/ (- (+ 515 (* 222 311)) 300) 41)\r\n1689.1951219512196'

[chr15m]

~/dev/mal/js$ node stepA_interop.js 
Mal [javascript]
user> (/ (- (+ 515 (* 222 311)) 300) 41)
1689.1951219512196
user> (* 222 311)
69042
user> (+ 515 (* 222 311))
69557
user> (- (+ 515 (* 222 311)) 300)
69257
user> (/ (- (+ 515 (* 222 311)) 300) 41)
1689.1951219512196

Ah:

~/dev/mal/js$ node
> 69257 / 41
1689.1951219512196

Way to go, Javascript.

[kanaka]

I didn't want to force integer results so I changed the test to result in whole number.