Choose the correct option.

$9.$ When $851$ is divided by $-23,$ the quotient is:

Choose the correct option.

$10.$The product of the largest negative integer and zero is:

$1.$Simplify the following:

$a. \left(-4\right)+\left(-6\right)+19$

$1.$Simplify the following:

$b. 21-102+\left(-176\right)$

$1.$Simplify the following:

$c. 345-\left(-117\right)-256$

$1.$Simplify the following:

$d. \left(-15\right)-\left[\left(-16\right)+9-57\right]$

$1.$Simplify the following:

$e. 19-\left(-18\right)+17-\left(-16\right)+15-\left(-14\right)$

$1.$Simplify the following:

$f. 20-\left(-15\right)+16-\left(-5\right)+4$

$2.$ Multiply the following.

$a. \left(-4\right)\times \left(-10\right)\times 3$