Answer:
3.4285714284
Explanation:
6÷7 = 0.8571428571
0.8571428571 × 4 = 3.4285714284
6/28 or 0.214
6/7÷4=6/7÷4/1
6/7÷4/1=6/7×1/4
6/7×1/4=6/28
Not sure if you're allowed to leave it in a fraction or not, so as a decimal, it's 0.214 to 3 s.f.
Hope this helps :-)
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