formula

<use xlink:href="/assets-global/icons/svg-sprite.svg?v=2022-01-20-233300-fbd44c1-024237#ico_plus"> <use xlink:href="/assets-global/icons/svg-sprite.svg?v=2022-01-20-233300-fbd44c1-024237#ico_minus">

<use xlink:href="/assets-global/icons/svg-sprite.svg?v=2022-01-20-233300-fbd44c1-024237#ico_plus"> <use xlink:href="/assets-global/icons/svg-sprite.svg?v=2022-01-20-233300-fbd44c1-024237#ico_minus">

<use xlink:href="/assets-global/icons/svg-sprite.svg?v=2022-01-20-233300-fbd44c1-024237#ico_plus"> <use xlink:href="/assets-global/icons/svg-sprite.svg?v=2022-01-20-233300-fbd44c1-024237#ico_minus">

<use xlink:href="/assets-global/icons/svg-sprite.svg?v=2022-01-20-233300-fbd44c1-024237#ico_plus"> <use xlink:href="/assets-global/icons/svg-sprite.svg?v=2022-01-20-233300-fbd44c1-024237#ico_minus">

<use xlink:href="/assets-global/icons/svg-sprite.svg?v=2022-01-20-233300-fbd44c1-024237#ico_plus"> <use xlink:href="/assets-global/icons/svg-sprite.svg?v=2022-01-20-233300-fbd44c1-024237#ico_minus">