Solve 21/12.13/5=

$$21 / 12.13 / 5 =$$

Evaluate

$$\frac{7}{4}=1.75$$

Steps For Long Division Method

Use the 1^{st} digit 2 from dividend 21

$$\begin{array}{l}\phantom{12)}\phantom{1}\\12\overline{)21}\\\end{array}$$

Since 2 is less than 12, use the next digit 1 from dividend 21 and add 0 to the quotient

$$\begin{array}{l}\phantom{12)}0\phantom{2}\\12\overline{)21}\\\end{array}$$

Use the 2^{nd} digit 1 from dividend 21

$$\begin{array}{l}\phantom{12)}0\phantom{3}\\12\overline{)21}\\\end{array}$$

Find closest multiple of 12 to 21. We see that 1 \times 12 = 12 is the nearest. Now subtract 12 from 21 to get reminder 9. Add 1 to quotient.

$$\begin{array}{l}\phantom{12)}01\phantom{4}\\12\overline{)21}\\\phantom{12)}\underline{\phantom{}12\phantom{}}\\\phantom{12)9}9\\\end{array}$$

Since 9 is less than 12, stop the division. The reminder is 9. The topmost line 01 is the quotient. Remove all zeros at the start of the quotient to get the actual quotient 1.

$$\text{Quotient: }1 \text{Reminder: }9$$

Factor

$$\frac{7}{2 ^ {2}} = 1\frac{3}{4} = 1.75$$