Question

`1 * (3)/(4) * 111.8 * 860 \\`
please help me.

Answer 1

The answer is: " 386 " .
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Step-by-step explanation:
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Eliminate the "1" ; since "1" multiplied by any value, results in that same value.

We have:

" (3/4) * (11.8) * (360) " ;

↔ "(3/4) * (360) * (1.8)" ;

Start with: "(3/4) * (360)" ;

→ " (3/4) * (360) =
`((3*360))/(4)` ;

→ The "4" cancels out to a "1" ; and the "360" cancels out to a "90" ;

→ since: "(360 ÷ 4 = 90)" ; and since: "(4 ÷ 4 = 1)" ;

And we have:
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→
`((3 * 90) )/(1) = (3 * 90) = 270` .

Now, multiply: "1.8 * 270" ;
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→ 1.8
* 270
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= (18 * 27) ; → Take that value and add a "0" to the end of that value;
and then: → take "this obtained value" ; and move it back ONE DECIMAL place;
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So, "1.8 * 27 = ? " ;
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Step 1)

₅
18
* 27
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126
+ 36
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3 8 6
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Step 2: Add a "0" to the end of that value:
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"386 " ; → " 3860 " ;
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Step 3: Remove this "obtained value" one decimal place back:
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"3860" ; → "386.0" ; write as: → " 386 " .
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The answer is: " 386 " .
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