What is longmult 18*15 ?

The solution to longmult 18*15 is 270

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Multiply 18*15

long multiplication

18 \cdot 15

270

Solution steps

18 \cdot 15

Line up the numbers

\times 1185

Multiply the top number by the bottom number one digit at a time starting with the ones digit (from right to left)

Multiply the top number by the bolded digit of the bottom number

\times 1185

Mutliply the bold numbers:

8 \cdot 5 = 40

Carry

4

to the column on the left and write

0

in the result line

\frac{\times 4 1 1 8 5}{0}

Add the carried number to the multiplication:

4 + 1 \cdot 5 = 9

\frac{\times 4 1 1 8 5}{9 0}

Multiply the top number by the bolded digit of the bottom number

\frac{\times 1 1 8 5}{9 0}

Mutliply the bold numbers:

8 \cdot 1 = 8

\frac{\times 1 1 8 5}{9 8 0}

Mutliply the bold numbers:

1 \cdot 1 = 1

\frac{\times 1 1 8 5}{1 9 8 0}

Add the rows to get the answer. For simplicity, fill in trailing zeros

\frac{\times 1 1 8 5}{0 1 9 8 0 0}

90 + 180 = 270

= 270

252

t o a p erce n t a g e 13/40

t h e \frac{78}{12}

180 - 145

t o a p erce n t a g e 0.25